A cementitious binder, includes a hydraulic binder in an amount in the range from 50 to 80% by weight of the cementitious binder; a first siliceous based material in an amount in the range from 0.5 to 35% by weight of the cementitious binder, the first siliceous based material having a (SiO2)/(AI2O3) ratio by weight greater than 2.5; a second siliceous based material in an amount in the range from 10 to 25% by weight of the cementitious binder, the second siliceous based material being different from the first siliceous based material and having (a) a (SiO2)/(AI2O3) ratio by weight greater than 10 and (b) a BET specific surface area greater than 5m2/g; and an aluminum based material in the range from 0 to 10% by weight of the cementitious binder and having a (SiO2)/(AI2O3) ratio by weight lower than 2.5, wherein 0.09 < AIEFF/( AIEFF+SiEFF) < 0.28, where AIEFF = molar content of alumina in the hydraulic binder, and SiEFF = molar content of silica in the first siliceous based material for particles having a size lower than 3μηι + molar content of silica in the second siliceous based material.
The invention relates to an insulating construction material with low thermal conductivity, comprising a sulfoaluminate-belite clinker and additives of plant origin, as well as to a method for the production and use of such a material.
The present invention relates to a system (1) for injecting a low-density aqueous mineral foam (M), in particular a cement foam, into a cell (101) of a construction element (100), in particular into a cell of a construction block, comprising: a means (2) for storing the aqueous mineral foam (M); a means (3) for adjusting the flow of the aqueous mineral foam (M) from the storage means (2) towards the outside of the storage means (2), said adjustment means (3) being movable between a first position (P1) or a first operating state in which the flow of the aqueous mineral foam (M) is allowed and a second position (P2) or a second operating state in which the flow of the aqueous mineral foam (M) is interrupted; a control means (4) arranged to control the movement of the adjustment means (3) so as to collect a volume of aqueous mineral foam (M) from the storage means (2); and a means (5) for conveying the aqueous mineral foam (M), arranged between the storage means (2) and the cell (101) of the construction element (100), the conveying means (5) being sized so as to grant the aqueous mineral foam (M) an estimated maximum shear velocity of 55 s-1, preferably 30 s-1, and more preferably 5 s-1.
B28B 11/04 - Apparatus or processes for treating or working the shaped articles for coating
B28B 13/02 - Feeding the unshaped material to moulds or apparatus for producing shaped articles
E04C 1/41 - Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
B29C 44/38 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
7.
MICROSTRUCTURED CARBONATABLE CALCIUM SILICATE CLINKERS AND METHODS THEREOF
The invention provides novel, microstructured clinker and cement materials that are characterized by superior grindability and reactivity. The disclosed clinker and cement materials are based on carbonatable calcium silicate and can be made from widely available, low cost raw materials via a process suitable for large-scale production. The method of the invention is flexible in equipment and processing requirements and is readily adaptable to manufacturing facilities of conventional Portland cement.
C04B 40/02 - Selection of the hardening environment
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
C04B 35/22 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on silicates other than clay rich in calcium oxide
C04B 7/345 - Hydraulic cements not provided for in one of the groups
8.
COMPOSITE MATERIALS AND BONDING ELEMENTS FROM CARBONATION OF CALCIUM SILICATE AND METHODS THEREOF
The invention provides composite materials comprising novel bonding elements exhibiting unique microstructures and chemical compositions, and methods for their manufacture and uses, for example, in a variety of concrete components with or without aggregates in the infrastructure, construction, pavement and landscaping industries.
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
C04B 7/345 - Hydraulic cements not provided for in one of the groups
A bag (10) for a granular material (12), comprising: a body (20) defining a volume and formed of a woven polymer material, the body (20) comprising a laminated layer arranged along at least an outer surface (22) of the body (20) located on the opposite side of the volume, the body (20) presenting end portions (30) disposed at opposed extremities (24) thereof, one of the end portions (30) forming a structure (34) presenting an inner surface (37) and arranged to accommodate an outer mating surface (44) of a valve (40), the valve (40) presenting an inner filling surface (42) opposed to the outer mating surface (44), the valve (40) being made of a non-woven fabric (46) and presenting a first position wherein the valve (40) is opened and forms a passageway (36) delimited by the inner filling surface (42) allowing for filling the volume with the granular material (12), and a second position wherein the valve (40) and the passageway (36) are closed in order to seal the bag (10), the valve (40) moving from the first position to the second position upon the granular material (12) within the body (20) abutting against the structure (34).
The present invention relates to a hydraulic binder which comprises: a clinker with a specific shape, the clinker comprising as main phases, given as weight percentages relative to the total weight of the clinker: (i) 70 to 95 % of a belite phase having a particle size such that the Dv50 ranges from 5 to 15 µm; (ii) 5 to 30 % of a calcium aluminoferrite phase; and (iii) less than 5 % of minor phases; the clinker having an Al2O3/Fe2O3 weight ratio of less than 1.5; and the clinker comprising less than 5 % of alite phase and less than 5 % of calcium sulphoaluminate phase; and at least 0.5 % dry weight of an activator made of calcium sulphate, as a weight percentage relative to the total weight of phases (i) to (iii).
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention relates to a method for producing a low-density mineral foam. The invention also relates to the use of said mineral foam as an insulating material.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a hydraulic composition for building roads, in particular for repairing roads, comprising: a hydraulic binder comprising a cement; 0.18 % to 0.35 % of a superplasticiser, said percentage being given as a dry weight percentage relative to the cement, said superplasticiser comprising a branch polymer including at least one side chain having a phosphonate or phosphate terminal function; and 0.25 % to 2 % of a setting agent, said percentage being given as a dry weight percentage relative to the cement, said setting agent comprising a calcium salt, said hydraulic composition having a water to cement ratio higher than 0.38 and strictly lower than 0.45.
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (France)
LAFARGE (France)
Inventor
Panier, Faustine
Paubel, Xavier
Renna, Carlo
Gimenez, Michel
Paxton, Colin
Wassard, Henrik
Drivsholm, Morten
Tsiava, Rémi
Abstract
Method and installation for calcining cement raw meal in a calciner (10) whereby fuel and a calciner oxidant having an oxygen content of at least 30% vol are introduced into the calciner (10) so as to generate either an oxidant-lean zone or a fuel-lean zone in the calciner located between the lowermost fuel inlet level (L13) and the lowermost oxidant inlet level (L16) of the calciner (10), between 50% and 100% by weight of the raw meal (14, 15) being supplied to the calciner (10) upstream of and/or within the oxidant-lean, respectively the fuel-lean zone.
The subject of the present invention is a section (10) of concrete intended to form a mast (1) for a windmill (2), said section comprising: - a first portion (11) comprising a first flange (11'), - a second portion (12) comprising a second flange (12'), - a prestressing device (20) comprising at least one visible part (22) located between the first flange (11') and the second flange (12'), - a first attaching device (13a) arranged to be connected to the first flange (11'), and/or - a second attaching device (13b) arranged to be connected to the second flange (12'), and the resulting mast (1) and a method for constructing a mast (1).
E04H 12/18 - TowersMasts or polesChimney stacksWater-towersMethods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
E04H 12/34 - Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
The present invention consists in a unit (1) for drying granular materials (G) including: - a support structure (10), - a drying surface (20) arranged on the support structure (10) and intended to receive a layer of granular materials (G) to be dried, and wherein the drying surface (20) covers all or part of the surface of a turning cone in which the value of the angle (a) of the generatrices relative to the horizontal is between 25° and 40° so as to ensure the stability of the layer of granular materials (G) on the drying surface (20).
F26B 3/28 - Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
F26B 17/30 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary or oscillating containersMachines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotary floors
The invention relates to an insulating, load-bearing concrete block comprising plant aggregates and mineral aggregates. It also relates to the method for producing such a concrete, by mixing the plant aggregates and the mineral aggregates in determined respective proportions.
The present invention relates to a prefabricated monobloc panel (1) for forming walls of a building, said panel (1) having a framework (2) comprising concrete with a density of 1100 kg/m3 to 1800 kg/m3 and a compressive strength of at least 16 MPa at 28 days, preferably 30 MPa at 28 days, and to a method for producing such a panel.
E04C 2/288 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups , , , or of materials covered by one of these groups with a material not specified in one of these groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
E04C 2/38 - Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
18.
SUBSTRATE MADE OF A CONSTRUCTION MATERIAL, COATED WITH A LAYER OF POLYMERS DEPOSITED BY PLASMA TECHNOLOGY AND A THIN FILM
The invention relates to a product (1) comprising: a substrate made of a construction material (2); a composition of polymers (3) arranged over all or part of the surface of the substrate made of a construction material (2), the composition of polymers (3) being deposited by plasma-enhanced chemical vapour deposition; and a thin film (4) for forming all or part of an electronic device, especially operating on the basis of the photovoltaic effect, and arranged over all or part of the composition of polymers (3).
The present invention relates to a method for treatment of a pozzolanic material, comprising a step of bringing the pozzolanic material into contact with an inorganic compound able to release a cation in solution, the mixture of the pozzolanic material and the inorganic compound comprising 1 to 15% water by mass, and the bringing of the pozzolanic material into contact with the mineral compound being performed over a period of at least 1 hour before the use of the treated pozzolanic material.
C04B 28/10 - Lime cements or magnesium oxide cements
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
The invention relates to a novel non-self-levelling, ultra-high performance hydraulic composition that can be used to produce concrete parts in a single step, regardless of the shape or cross-section of the part and without requiring an assembly step.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a hydraulic binder comprising, as percentage by mass: - from 17 to 55% of a Portland cement, the particles of which have a D50 of from 2 μm to 11 μm; - at least 5% of silica fume; - from 36 to 70% of a mineral addition A1, the particles of which have a D50 of from 15 to 150 μm; the sum of these percentages being from 80 to 100%; the sum of the percentages of cement and of silica fume being greater than 28%; the mineral addition A1 being selected from slags, pozzolanic additions or siliceous additions such as quartz, silico-calcareous mineral additions, calcareous additions such as calcium carbonate or mixtures thereof.
The present invention relates to a hydraulic binder containing, in wt%: - 20% to 82% Portland cement, the particles of which have a D50 from 2 μm to 11 μm; - 15% to 56% of a non-pozzolanic mineral additive A1, the particles of which have a D50 from 1 μm to 150 μm, said additive being selected from limestone additives such as calcium carbonate, silica additives such as quartz, silica/limestone mineral additives, calcined shales, zeolites, burnt plant ash, and the mixtures thereof; and - 4% to 30% of a pozzolanic mineral additive A2, the particles of which have a D50 between 1 and 150 μm. The sum of said percentages is between 90% and 100%.
The invention relates to concrete with a smooth surface, coated completely or partially with a polymer film obtained by means of radiation-induced polymerisation, said film in turn being coated completely or partially with a thin photovoltaic film.
C04B 41/71 - Coating or impregnating for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
H02S 20/26 - Building materials integrated with PV modules, e.g. façade elements
H01L 31/0392 - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS - Details thereof characterised by their semiconductor bodies characterised by their crystalline structure or particular orientation of the crystalline planes including thin films deposited on metallic or insulating substrates
The invention concerns a method for producing a mineral foam comprising the following steps: (i) independently preparing a cement slurry and an aqueous foam, the cement slurry being prepared by mixing water E and cement C, the cement C comprising a soluble equivalent quantity x of Na2O, x being expressed by weight for 100 parts cement, said slurry having a ratio x / (E/C) less than or equal to 1,75, E/C being expressed by weight, and the particles of cement C having a size distribution such that the particle size distribution ratio dmax(h/2)/dmin(h/2) is between 5 and 25; (ii) bringing the cement slurry into contact with the aqueous foam in order to obtain a foamed cement slurry; and (iii) shaping the foamed cement slurry obtained in step (ii) and allowing setting to take place.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
C04B 38/10 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by using foaming agents
25.
METHOD FOR PRODUCING AN INSULATING COMPOSITE BUILDING BLOCK
The invention relates to a method for producing an insulating composite block comprising a mineral foam, said method comprising the following steps: a. providing a block comprising at least one cell having walls which are either sufficiently humid or consist of a water-repellent material, and b. filling said cell with a mineral foam that does not substantially comprise any calcium aluminate. The invention also relates to an insulating composite block comprising a block, said block comprising at least one cell having walls optionally comprising a water-repellent material, said cell being filled with a mineral foam that does not substantially comprise any calcium aluminate.
E04C 1/41 - Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts composed of insulating material and load-bearing concrete, stone or stone-like material
C04B 38/10 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof by using foaming agents
C04B 41/00 - After-treatment of mortars, concrete, artificial stone or ceramicsTreatment of natural stone
C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
C04B 111/10 - Compositions characterised by the absence of a specified material
The invention relates to a hydraulic binder comprising a belite sulfoaluminate clinker and silica having a BET specific surface area in nitrogen of at least 50 m²/g, the quantity of silica being lower than or equal to 5%, said percentage being expressed as a mass percentage in relation to the mass of the binder.
C04B 28/16 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite
The present invention relates to a composition comprising a pozzolanic material and a specific cationic polymer, which can be used to reduce the water and/or superplasticiser needs of a pozzolanic material in a hydraulic composition.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention relates to an installation for pre-calcination (20) of pulverulent mineral materials (22), intended for the production of cement, comprising a pre-calciner (14) including an enclosure (50), supply ducts (70) of the mineral materials into the enclosure, supply ducts (65, 66) of hot gases into the enclosure, at least one exhaust duct (71) of the hot gases from the enclosure, one first chamber (72) communicating with the enclosure, supply ducts (78) of waste materials (80) into the first chamber, at least one second chamber (74) communicating with the enclosure, at least one first mobile pushing part (86) arranged to push the waste material out of the first chamber, the second chamber being intended to receive the waste material pushed out of the first chamber, and at least one second mobile pushing part (86) arranged to push the waste material out of the second chamber.
The present invention discloses a unitized precast grillage foundation for supporting a structure comprising: a plurality of anchoring elements defining a grid for resting on an underlying surface; a base connected on the grid, the base comprising at least a first footing and a second footing spaced apart and at least one connecting member between and connected to the at least first footing and the second footing; and a beam-column projecting upwardly from the base, and a method of making same.
The present invention relates to the use of a polymer as a fluidizer for a hydraulic binder comprising a sulfoaluminous clinker, the polymer comprising in molar percentages: at least 25 % of a first unit with a base of phosphorus; and more than 40 to 65 % of a second polyoxyalkylene unit; the polymer comprising at least 30 % of units comprising a negative charge; and more than 50 % of the units comprising a negative charge being a first unit with a base of phosphorus.
The present invention relates to a hydraulic binder comprising: 25 to 60 % by mass of Portland clinker; 5 to 15 % by mass of a first mineral addition selected from: o mineral additions reacting with at least 400 mg/g of CaO according to the method at 90°C described in the NF P 18-513 Standard of December 30, 201 1, in Appendix A, and o latent hydraulic materials; a second mineral addition reacting with less than 400 mg/g of CaO according to the method described herein above; and either a third mineral addition with a base of calcium carbonate or calcium sulphate, or both; the hydraulic binder comprising at least 1 % by mass of reactive aluminium, which is to say that contributes to the development of strengths.
This shuttering kit comprises a plurality of panels (70), each panel being made from a mineral material and defining, in the thickness of same, at least one cavity (77), which links together two opposing edges of the panel and which opens on each of said two edges, forming an opening, said panels being separable from each other and being designed for forming at least three partitions (P1, P2, P3) of the wall, the panels of each of these three partitions being arranged, by juxtapositioning the edges thereof, in a same plane; and a plurality of spacers (80; 90), each spacer being separable from the panels and including at least two assembly parts, which are linked rigidly to each other by a connecting part of the spacer and which are each designed to engage, by interlocking, with each opening of the or each cavity of each panel, being at least accommodated inside the cavity. The at least two assembly parts of each spacer are respectively designed to thus engage with one or a plurality of the panels forming at least two of the three partitions of the wall, such that the three partitions are held securely in position by the spacers, with interposition of a first shuttering space of at least one filling material between a first and a second of the three partitions and with interposition of a second shuttering space of at least one filling material between the second and third partitions.
The invention provides a process for the preparation of a second composition, said process comprising the steps of: -preparing a first compositioncomprising an alkali metal magnesium orthosilicate andoptionally either(i) magnesium oxide or(ii) an alkali metal silicate, byreaction, at a temperature from 500 to 1200°C, of an alkali metal carbonate compound, which compound is an alkali metal carbonate, an alkali metal bicarbonate or a mixture thereof, with a magnesium silicate, the molar ratio of alkali metal carbonate compound, expressed as alkali metal oxide of the formula R 2 O, in which R represents an alkali metal, to magnesium silicate, expressed as silicon dioxide, of the formula SiO 2, being from 4:1 to 1:4, and -contacting the first composition with water to produce thesecond composition comprising an amorphous magnesium silicate hydrate (M-S-H). It is possible to isolateor producefurther useful products from the second composition.
C04B 28/10 - Lime cements or magnesium oxide cements
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
34.
PROCESS AND EQUIPMENT FOR DRYING SOLID WASTE MATERIAL USING GAS FROM A CLINKER COOLER
The invention relates to a process to dry solid waste material comprising: • - providing a drying pipe (40) comprising an upward section (44); • - feeding solid waste material to be dried at a feeding point (32), located at the bottom of said upward section; • - feeding a drying gas into said upward section at a speed greater than 15 m/s, said drying gas comprising exhaust gas from a clinker cooler, in order to create an upward flow of said waste material in said upward section and to provide a final drying gas and dried solid waste material; and • - separating the final drying gas from the dried solid waste material, downstream of the drying pipe. The invention also relates to an equipment for drying solid waste.
F26B 3/00 - Drying solid materials or objects by processes involving the application of heat
C04B 7/43 - Heat treatment, e.g. precalcining, burning, meltingCooling
F26B 3/10 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour carrying the materials or objects to be dried with it
35.
INSULATING CONSTRUCTION MATERIALS WITH A BASE OF VEGETAL ADDITIONS
The invention relates to an insulating construction material with low thermal conductivity comprising vegetal additions, as well as to a process for preparation and to uses of such a material.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a compression grinding process of at least one component of a hydraulic binder, said process comprising the compression of a bed of material (M) formed by this or these component(s) in a grinding zone (30), said process further comprising the addition of oil to the bed of material, via distribution means (66) located upstream of the inlet (32) to the grinding zone.
The present invention discloses a unitized precast grillage foundation for supporting a structure comprising: a plurality of anchoring elements defining a grid for resting on an underlying surface; a base connected on the grid, the base comprising at least a first footing and a second footing spaced apart and at least one connecting member between and connected to the at least first footing and the second footing; and a beam-column projecting upwardly from the base, and a method of making same.
The present invention discloses a unitized precast grillage foundation for supporting a tower comprising: a plurality of anchoring elements defining a grid for resting on an underlying surface; a base connected on the grid, the base comprising at least a first footing and a second footing spaced apart and at least one connecting member between and connected to the at least first footing and the second footing; and a beam-column projecting upwardly from the base, and a method of making same. In a preferred embodiment, the tower is an electrical transmission tower.
The present invention relates to a process for production of clinker and electricity, comprising the following steps: - introduce the raw meal (102, 102'), fuel (121, 121') and a combustion agent (113, 113'), in at least two precalciners (3, 3') positioned in parallel, - precalcine the raw meal at a temperature of from 750 to 950°C, in order to obtain precalcination flue gases (132, 132') and a precalcined raw meal (103, 103'), - treat the precalcination flue gases (132, 132') and the precalcined raw meal (103, 103') towards respective cyclones (4, 4'), in order to obtain precalcination flue gases (133, 135) and a precalcined raw meal (104, 104'), - clinkerise the precalcined raw meal (104, 104'), in order to obtain clinker (105), - produce steam, by transmission of heat from at least one part of the flue gases (135) coming from at least one secondary precalciner (3') and the corresponding cyclone (4'), - produce electricity (150) from this steam, using an electricity generator (6) comprising a steam turbine and steam generator (7), - vary the feed rate of raw meal and/or the flow rate of fuel and/or the flow rate of combustion agent in at least one secondary precalciner (3'), to vary the quantity of electricity produced, - introduce into at least one secondary precalciner (3'), a flow of a dilution flue gas (138'), this flow being, in particular, formed from one part of the precalcination flue gases having already transmitted their heat, wherein the precalcination flue gases (135) coming from the at least one secondary precalciner (3') and the corresponding cyclone (4') are diluted, before transmitting their heat, to obtain diluted precalcination flue gases (136), in particular with a fraction (137) of these precalcination flue gases having already transmitted their heat.
The present invention relates to a lightweight concrete with low thermal conductivity, as well as to a process for preparation and to uses of such a concrete.
The present invention relates to a use of an admixture containing boron, which comprises a boron oxide, boric acid or a borate, before or during the mixing,to improve the compressive mechanical strength of a hydraulic composition,comprising a Portland clinker and a mineral addition, said compressive mechanical strength being measured 28 days after the hydraulic composition has been mixed.
The present invention relates to ahydraulic binder comprising a Portland clinker having a Blaine specific surface of 4000 to 5500 cm²/g, from 2.5 to 8 % of sulphate expressed by mass of SO3 relative to the mass of clinker, from 1.5 to 10 % of calcium nitrite and/or calcium nitrate expressed as anhydrous mass relative to the mass of clinker and from 15 to 50 % of a mineral addition comprising calcium carbonate by mass relative to the total mass of binder.
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
The present invention relates to a process for production of insulating mineral foams produced from a slurry of cement and an aqueous foam. The invention also relates to the mineral foam obtained by this process, its uses and elements of construction produced with this mineral foam.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention concerns a method for controlling at least one workability parameter of concrete (14) contained in a container (12) of a mixer (11) with a non-vertical axis of rotation. The method comprises the following steps: rotating the container at at least two different rotational speeds; determining, for each of said rotational speeds, a rotary drive torque C of the container, a shear stress value τ of the concrete and a speed gradient γ of the concrete according to the following relationships: τ = T (ω). C γ = G (ω). ω where T and G are predetermined functions; determining a relationship of change of shear stress τ on the basis of speed gradient γ by extrapolation and/or approximation from the determined values; and providing an indication of the workability parameter of the concrete from the relationship of change.
G01N 3/28 - Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning
G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
The present invention relates to a hydraulic binder comprising in parts by mass: (a) 40 to 70 parts of a Portland clinker; (b) 30 to 60 parts of fly ash; (c) optionally up to 30 parts of an inorganic material other than clinker or than fly ash; (d) 2.5 to 15 parts of an alkali metal salt expressed in parts of equivalent-Na2O relative to 100 parts of fly ash; and (e) 2 to 14 parts of sulphate expressed in parts of SO3 relative to 100 parts of clinker; the fly ash having a Dv97 less than or equal to 40 μm, and the sum of (a), (b) and (c) being equal to 100.
The present invention relates to a grinding process, in a grinding unit comprising: • a first shop comprising a first mill (11) and a first separator (12), an outlet from the first mill (11) being connected to an inlet of the first separator (12); • a second shop comprising a second separator (22) and a second mill (21), an outlet from the second separator (22) being connected to an inlet of the second mill (21); the second separator (22) being fed by the material coming from the first separator (12), characterised in that: - the first separator (12) is operated at a tangential speed of 15 to 25 m/s and a radial speed of 3.5 to 5 m/s; and - the second separator (22) is operated at a tangential speed of 20 to 50 m/s and a radial speed of 2.5 to 4 m/s.
B02C 15/00 - Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
B02C 17/00 - Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
B02C 21/00 - Disintegrating plant with or without drying of the material
B02C 23/12 - Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
B02C 23/14 - Separating or sorting of material, associated with crushing or disintegrating with more than one separator
47.
BAG AND ITS USE TO PROVIDE ADMIXTURE FOR A HYDRAULIC COMPOSITION
The present invention relates to the use of a bag to provide an admixture for a hydraulic composition, wherein a wall of the bag comprises a layer, said layer comprising a water-soluble polymer, and wherein an admixture is present in the wall of the bag.
The invention provides a particulate material for the production of a cement foam which material comprises particles comprising, attached to the particle surface, a surfactant which renders the particles hydrophilic, the surfactant comprising a moiety which is hydrolysable under alkaline conditions, which surfactant, after loss of the moiety by alkaline hydrolysis, renders the particles partially hydrophobic.
B01F 17/00 - Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
B01J 13/00 - Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided forMaking microcapsules or microballoons
01 - Chemical and biological materials for industrial, scientific and agricultural use
19 - Non-metallic building materials
40 - Treatment of materials; recycling, air and water treatment,
Goods & Services
Chemicals for use in the construction industry; Mineral and chemical additives and adjuvants for building materials, in particular for concrete, aggregates and cement; Agglutinants for concrete, aggregates and cement; Compositions and preparations for the protection and waterproofing of cement, aggregates and concrete (except paints). Materials and goods for the construction, maintenance, repair and renovation of buildings, works of art, roads, bridges and other highways and surfaces for transport and traffic and public works of all kinds; Cements, Mortars, Concrete, Aggregates, Alluvial, calcareous or eruptive materials, Sand, Stone chippings, Gravel, Bank gravel, riprap, Gypsum, Sandstone, Synthetic aggregate. Treatment of materials; Treatment and cleaning of sand and aggregates.
50.
PROCESS FOR THE PRODUCTION OF A RAPID HYDRAULIC BINDER
The present invention relates to a process for the production of a hydraulic binder, said process comprising co-grinding a clinker and 0.1 to 5% by dry mass relative to the mass of clinker, of a material comprising more than 15% by mass of calcium silicate hydrate relative to the solid fraction of the material.
C04B 28/18 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
51.
HYDRAULIC COMPOSITION SUBMITTED TO A THERMAL TREATMENT
The present invention relates to a process to improve the mechanical strength 28 days after mixing of a hydraulic composition submitted to a thermal treatment, the hydraulic composition comprising a hydraulic binder and optionally a mineral addition, wherein the process comprises the addition of a calcium salt and an optimized quantity of sulphate to the hydraulic composition.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention provides a process for the mineralization of carbon dioxide to form a magnesium carbonate compound, which process comprises contacting the carbon dioxide, in the free form, or in the form of an alkali metal carbonate or bicarbonate, with an alkali metal magnesium silicate to produce the magnesium carbonate compound.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
The present invention relates to a curing process of a concrete element comprising at least partially coating the element with a curing composition, said composition comprising a solvent and a thickening agent, said thickening agent being insoluble at a pH greater than (12) and being soluble in the solvent for a solubility range of pH, the upper limit of the solubility range being less than (11).
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (France)
INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE (INPT) (France)
Inventor
Gimenez, Michel
Hemati, Mehrdji
Abstract
The present invention relates to a process for decarbonation of particles of raw meal, to be burnt in a clinkering kiln at a cement plant, which particles having a particle size distribution such that the retention of the particles on a 200 µm sieve is less than 2% by mass and the retention of the particles on a 90 µm sieve is less than 20% by mass, said process comprising the steps of: a) decarbonation of particles of raw meal, in a fluidised bed heat exchanger, said particles being suspended in a rising carrier gas comprising carbon dioxide, the said fluidised bed heat exchanger having a solid heat carrier circulating counter- current relative to the carrier gas, to provide an effluent gas comprising carbon dioxide and decarbonated raw meal; b)separating said effluent gas and the decarbonated raw meal c) separating the effluent gas into a first and second part; cooling said first part of the effluent gas and recycling to provide carrier gas, d)isolating said second part of effluent gas e)recovering and re heating said heat carrier and recirculating to step (a).
F27B 7/20 - Details, accessories or equipment specially adapted for rotary-drum furnaces
F27D 17/00 - Arrangements for using waste heatArrangements for using, or disposing of, waste gases
C10B 49/22 - Destructive distillation of solid carbonaceous materials by direct heating with heat-carrying agents including the partial combustion of the solid material to be treated with moving solid heat-carriers in divided form in dispersed form according to the "fluidised bed" technique
F23C 10/10 - Apparatus in which combustion takes place in a fluidised bed of fuel or other particles with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
F23G 5/30 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of waste or low-grade fuels with combustion in a fluidised bed
F28D 13/00 - Heat-exchange apparatus using a fluidised bed
F28D 19/02 - Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using granular particles
B01J 8/12 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with moving particles moved by gravity in a downward flow
B01J 8/18 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles
B01J 8/38 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles according to "fluidised-bed" technique with fluidised bed containing a rotatable device or being subject to rotation
The present invention relates to a hydraulic binder comprising, in parts by mass: (a) from 20 to 60 parts of Portland clinker; (b) from 20 to 40parts of slag; and (c) from 0to 60 parts of inorganic material other than the clinker and the slag; the sum of (a), (b) and (c) being equal to 100 parts; which binder further comprises a slag activator comprising,relative to 100 parts of the sum of (a) and (b): from 1.4 to 6.55 parts of alkali metal salt, expressed as equivalent-Na2O; and from 1.1 to 11.0 parts of calcium sulfate, expressed as SO3.
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
56.
PROCESS FOR CARBON DIOXIDE REMOVAL FROM A GAS BY CONTACTING IT WITH A SOLID
The invention provides a process for reducing the concentration of carbon dioxide in a gas comprising carbon dioxide and water vapour (preferably a flue gas, more preferably a cement plant flue gas) which process comprises contacting the gas with a particulate solid, which solid is a waste material which comprises an alkaline earth metal oxide or hydroxide or a mixture thereof and which particulate solid also comprises an added alkali metal compound which is an alkali metal hydroxide, carbonate or bicarbonate, or a mixture thereof.
The present invention relates to a permeable concrete comprising, in relative parts by weight: 100 of Portland cement; 0.1 to 500 of a sand having a single particle size with a D10 to a D90 of 0.063 to 5 mm, or a mixture of sands, the finest sand having a D10 to a D90 of 0.063 to 1 mm and the coarsest sand having a D10 to a D90 of 1 to 5 mm; 0 to 120 of a pozzolanic or non-pozzolanic particulate material or a mixture of pozzolanic or non-pozzolanic particulate materials having a mean particle size of less than 40 µm; 0.1 to 10 of a superplasticizer; 1000 to 3000 of a gravel or a mixture of gravels having a mean particle size of 4 to 14 mm; and 10 to 55 of effective water.
The present invention relates to premix comprising a particulate material and a binder material characterised in that (1) the particulate material comprises: - 1 to 50% by weight of a first material comprising ultrafine particles, said ultrafine particles having a Dv90 less than 8 μm or a BET specific surface area greater than 5 m2/g; - 1 to 70% by weight of a second material comprising fine particles, said fine particles having a Dv10 and a Dv90 from 1 to 100 μm or a BET specific surface area less than or equal to 5 m2/g; - 1 to 70% by weight of a third material comprising medium particles, said medium particles having a Dv10 and a Dv90 greater than 100 μm and less than or equal to 5 mm; (2) the binder material comprises: - a phosphate ion, an oxalate ion or a mixture thereof; and - an alkaline earth metal.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
59.
METHOD FOR TREATING A CONCRETE SURFACE TO PROVIDE A PHOTOCATALYTIC COATING
The present invention relates to a method for the treatment of a concrete surface, which comprises -at least partially covering the surface with a first coating which is substantially transparent and substantially impermeable to water; and -at least partially covering said first coating with a second coating which is substantially transparent and photocatalytic; -the surface having an average roughness Ra less than about 10µm.
C04B 41/71 - Coating or impregnating for obtaining at least two superposed coatings having different compositions at least one coating being an organic material
The present invention relates to a mold release composition used for the manufacture of parts made of a hydraulically setting material, including, relative to the weight of the mold release composition, at least: 10-20 wt % of an oil; 1-5 wt % of a water repellent; 0.1-l wt % of a calcium salt; 0.5-3 wt % of a nonionic surfactant or a mixture of surfactants having a hydrophilic-lipophilic balance (HLB) of more than 8; and water.
The invention relates to a method for draining water from an aggregate cluster by means of gravity, the aggregate including, relative to the substantially dry weight of the aggregate, less than 20 wt % of particles having a size of less than 100 µm, the method including the following steps: placing the aggregate in contact with more than 50 ppm, relative to the substantially dry weight of aggregate, of a compound that is a draining agent and that includes an anionic polymer, a non-ionic polymer, a cationic polymer, a surface-active agent, or a mixture thereof, the compound(s) being water-soluble or dispersible in water at the concentration used; forming the aggregate cluster, the initial weight of the aggregate cluster after the formation thereof being greater than 5 tons, the aggregate cluster initially including, after the formation thereof, less than 40 wt % of water relative to the substantially dry weight of the aggregate cluster; and enabling the water to flow out of the cluster.
The invention relates to an article comprising an article comprising an element made of a high performance concrete or an ultra high performance concrete, said element comprising a surface; and particles of calcium dihydroxide covering more than 60 % of the surface. It also relates to a process for the preparation of such an article comprising the coating walls of a mould with a demoulding composition comprising an aqueous solution comprising at least 1 % of a surfactant, introducing the concrete in the fresh state in the mould; and removing the article from the mould after the concrete sets.
The invention provides a composition which comprises cement; ground granulated blastfurnace slag (ggbs) and/or pulverised fuel ash (pfa); fine aggregate;coarse aggregate;soil; and water which composition, after setting, yields a soil-containing concrete
A manufactured cementitious binder includes a hydraulic binder in an amount in the range of from 40 to 75% by weight of the cementitious binder; metakaolin in an amount in the range of from 1 to 30% by weight of the cementitious binder; silica fume in an amount up to 15% by weight of the cementitious binder; limestone in an amount of from 5 to 30% by weight of the cementitious binder, and a cementitious accelerator in a controlled amount of at least 0.5% by weight of the cementitious binder, the cementitious binder providing a cementitious settable composition when added with water, wherein for a density lower than 13 pounds per gallon and of at least 11 pounds per gallon obtained without a lightweight additive, said cementitious settable composition exhibits a 24 hour compressive strength at 100F, as hardened, of at least 500psi.
The present invention relates to a pervious concrete comprising, per cubic metre of fresh pervious concrete: from 80 to 160 litres of a mixture of a hydraulic binder and water, the ratio between the weight of water and the weight of hydraulic binder being from 0.25 to 0.4, the mixer having a yield point from 20 to 100 Pa; and from 450 to 700 litres of aggregates, the diameter of which is from 2 mm to 32 mm, the pervious concrete having, in the hardened state, a porosity from 25% to 35%.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a hydraulic composition comprising from 220 to 500 kg, per cubic metre of the hydraulic composition in the fresh state, of a hydraulic binder comprising Portland cement; from 400 to 1200 kg, per cubic metre of the hydraulic composition in the fresh state, of a sand having a D10 of greater than 0.1 mm and a D90 of less than 6 mm; from 0.1 to 5% by weight of solids, relative to the weight of the hydraulic binder, of a retarder; from 0.05 to 5% by weight of solids, relative to the weight of the hydraulic binder, of a superplasticizer; and from 0.01 to 2% by weight of solids, relative to the weight of the hydraulic binder, of a rheology modifier.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/06 - Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
The present invention relates to a hydraulic composition, comprising cement, a retarding agent, a superplasticizer and an agent comprising a compound chosen from a water-soluble salt, a lamellar double hydroxide, hydrate nuclei, a granular element having a BET specific surface area of greater than 5 m2/g, or a mixture of these compounds. Over at least 45 minutes after the addition of the accelerator, the variation in the slump of the hydraulic composition, measured according to the EN 12350-2 standard, is less than 50 mm or the variation in the spreading of the hydraulic composition, measured with a cone according to the EN 12350-2 standard, is less than 100 mm. The compressive strength of the hydraulic composition is at least equal to 1 MPa 24 hours after the start of setting of the hydraulic composition.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/06 - Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
The invention relates to a method for transporting a fresh hydraulic composition comprising: 220 to 500 kg of a hydraulic binder including Portland cement, per cubic metre of the fresh hydraulic composition; 400 to 1200 kg of sand, per cubic metre of the fresh hydraulic composition; 150 to 1000 kg of gravel, per cubic metre of the fresh hydraulic composition; 0.05 to 5 % dry weight of a superplasticiser, in relation to the weight of the hydraulic binder; and 0.01 to 0.5 % dry weight of a rheology modifier, in relation to the weight of the hydraulic binder, the transportation taking longer than ten minutes without the hydraulic composition being stirred.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/06 - Inhibiting the setting, e.g. mortars of the deferred action type containing water in breakable containers
B28C 5/02 - Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
B28C 5/42 - Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
The present invention relates to a rapid hydraulic binder comprising cement; a setting and hardening accelerator comprising hydrated calcium silicate seeds, a first superplasticizer and a second superplasticizer different from the first superplasticizer and having a maximum fluidizing action at 20°C after the maximum fluidizing action at 20°C of the first superplasticizer.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Mixture for a hydraulic composition, comprising: an inerting agent for at least partly neutralizing the deleterious effects of impurities of the hydraulic composition on the workability of the hydraulic composition; a first superplasticizer that differs from the inerting agent; and a second superplasticizer that differs from the first superplasticizer and from the inerting agent and has a maximum fluidizing action at 20°C that occurs after the maximum fluidizing action at 20°C of the first superplasticizer.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a method for inerting non-bloating clays in at least one mineral component intended for the preparation of a hydraulic composition, which includes adding, to the hydraulic composition, to the mineral component, or to one of the other components of the hydraulic composition, an organic molecule having a cationic charge density of strictly less than 0.5 meq/g and including at least two atoms, each of which is capable of forming at least one hydrogen bond.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention provides a foamed concrete having a density from 100 to 800kg/m3 comprising by mass relative to the total mass of the concrete: - a cement; - water; - from 0.01 to 5% of a water-reducing agent, plasticizer or superplasticizer; from 0.45 to 5% of a foaming agent relative to the amount of water; - from 0.01 to 5% of a water-soluble calcium salt; - inorganic particles from 0.1 to 300μm in size; the ratio of foaming agent to calcium salt being from 0.3 to 0.8; excluding foamed concretes comprising 10% or more by mass of slag; shaped elements comprising the foamed concrete; and a process for the preparation of the foamed concrete.
C04B 28/30 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements
The invention provides a foamed concrete having a density from 100 to 800kg/m3 comprising by mass relative to the total mass of the concrete: a cement; - water; from 0.01 to 5% of a water-reducing agent, plasticizer or superplasticizer; - from 0.45 to 5% of a foaming agent relative to the amount of water; from 0.01 to 5% of a water-soluble calcium salt; inorganic particles from 0.1 to 300μm in size; the ratio of foaming agent to calcium salt being from 0.3 to 0.8; the foamed concrete comprising 10% or more by mass of slag; shaped elements comprising the foamed concrete; and a process for the preparation of the foamed concrete.
C04B 28/30 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing magnesium cements
The invention relates to a concrete element comprising a superhydrophobic wall having a roughness Ra of between 1 μm and 10 μm and protuberances spaced out two by two at an average interval of between 1 μm and 150 μm. Said concrete element has a surface critical pore diameter of less than 100 nm and has parts flush with the wall, that are more hydrophobic than the concrete.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/02 - Selection of the hardening environment
B28B 7/34 - Moulds, cores, or mandrels of special material, e.g. destructible materials
The invention provides a process for reducing the concentration of carbon dioxide in a gas comprising carbon dioxide and water vapour (preferably a flue gas, more preferably a cement plant flue gas) which process comprises contacting the gas with a particulate solid, which solid comprises an alkaline earth metal oxide or hydroxide and a promoter selected from an alkanolamine; an unsubstituted or substituted piperazine; an unsubstituted or substituted morpholine; and a polyethyleneamine oligomer.
B01D 53/12 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents with dispersed adsorbents according to the "fluidised technique"
The present invention relates to an additive for treating at least one component of a hydraulic composition including at least one air-entraining agent and carbon materials, characterized in that said additive includes at least one polymer including at least one chain having hydrophobic end groups and a hydrophilic intermediate group between the end groups, the additive being suitable for at least partially neutralizing the carbon materials.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
78.
METHOD FOR PRODUCING AN AIR-ENTRAINED HYDRAULIC COMPOSITION INCLUDING CARBON MATERIALS
The present invention relates to a treatment method for manufacturing an air-entrained hydraulic composition including at least one additive and a component including carbon materials; the method includes: obtaining a value representative of the adsorption of probe molecules by the carbon materials; and the manufacture of the hydraulic composition or the treatment of said component with an amount of additive which depends on said value.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to the use of carbon materials as an inertant for treating at least one component of a hydraulic composition including at least one air-entraining agent. Said component includes the carbon materials of an additive including at least one polymer including at least one chain having hydrophobic end groups and a hydrophilic intermediate group between the end groups. The additive is suitable for at least partially neutralizing the carbon materials.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
80.
METHOD FOR PRODUCING A HYDRAULIC COMPOSITION HAVING ENTRAINED AIR
The present invention relates to a treatment method for manufacturing a hydraulic composition having entrained air, said hydraulic composition including at least one additive and a component including carbon materials. The method includes: obtaining a value representing the adsorption of molecules sought by the carbon materials; and manufacturing the hydraulic composition or treating said component with an amount of additive dependent on said value.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
81.
PROCESS FOR REMOVAL OF CARBON DIOXIDE FROM A GAS STREAM
The invention provides a process for reducing the carbon dioxide concentration of a carbon dioxide- containing gas which process comprises, in a first stage, contacting the carbon dioxide-containing gas with a treating solution comprising an alkali metal carbonate and/or hydroxide and with a catalyst to promote the absorption of carbon dioxide to form a second solution comprising an alkali metal carbonate and bicarbonate and, in a second stage, contacting the second solution with a carbonatable silicate-containing material comprising an alkaline earth cation capable of forming an insoluble carbonate to produce silica and a solid carbonate comprising the cation and to regenerate a solution comprising alkali metal carbonate.
B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
The present invention relates to a hydraulic binder characterised in that said binder comprises at least enzymes that catalyse the trapping and transformation of CO2 into carbonates and/or bicarbonates, the hydraulic binder being free of cement kiln dust (CKD).
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention relates to a method for inerting impurities in aggregates for preparing hydraulic or hydrocarbon compositions, said method including a step that involves adding, to the composition or to one of the components thereof, a cationic polymer corresponding to at least one natural polymer derivative or derivative of natural origin selected from among the group including dextrin (in particular yellow dextrin or white dextrin), chitosan, chitin, alginates, hemicellulose, pectin, polyols, or proteins.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C08L 95/00 - Compositions of bituminous materials, e.g. asphalt, tar or pitch
84.
USE OF A CONCRETE-BASED ELEMENT FOR THE TREATMENT OF GASES AND VOLATILE COMPOUNDS
The invention relates to the use of an element for the adsorption of at least one atmospheric volatile compound and/or an atmospheric gas from the group comprising atmospheric nitrogen oxides, sulphur oxides, carbon oxides, ozone and volatile organic compounds. The aforementioned element has a surface porosity strictly greater than 8% and comprises: a one-piece body made from concrete and having a volume greater than 1 L; and, in the concrete body and/or at the surface thereof, a compound having a BET specific exchange surface area greater than 100 m2/g, said element containing no photocatalytic agent.
B01D 53/02 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography
B01J 20/20 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbonSolid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising carbon obtained by carbonising processes
B28B 7/38 - Treating surfaces of moulds, cores, or mandrels to prevent sticking
C04B 41/65 - Coating or impregnating with inorganic materials
85.
HYDROCARBON-BASED COMPOSITION AND METHOD FOR PRODUCING SAME
The invention relates to a method for producing a hydrocarbon-based composition, said method comprising steps of mixing a heated hydrocarbon-based binder, aggregates and at least one superabsorbent polymer that has absorbed water.
A method of recovering and processing hydrocarbon waste generated by the oil production and refining sector that is currently stored in locations such as large lagoons, pits or on open ground. In particular the hydrocarbon waste is mineral oil waste having a high non-flammable solids content that renders the waste unusable as a fuel. The waste is processed to produce a blend that is suitable for use as a fuel by incineration units such as cement kilns. Wherein the combustion of the blend in the cement kilns consumes all of the components of the blend and does not produce any secondary waste that requires special treatment or disposal. A mobile processing plant (1, 2, 5, 8) is also provided to enable the method to be carried out at an oil waste storage site.
The subject of the present invention is a composition comprising at least, in % expressed by weight relative to the total weight of composition, from 0.01 to 3% of polycarboxylic acid or one of the salts of said polycarboxylic acid comprising from 2 to 4 carboxyl groups per molecule; and from 97 to 99.99% of a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF clinker).
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 7/345 - Hydraulic cements not provided for in one of the groups
C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
88.
WATER-REDUCING MIXTURE FOR A HYDRAULIC BINDER COMPOSITION
The present invention relates to a hydraulic composition including: at least one hydraulic binder; at least one water-reducing additive including at least one phosphonic amino-alkylene grouping; at least one second water-reducing additive including at least one comb polymer, the weight concentration in terms of dry extract being between 25% and 100% of the weight concentration in terms of dry extract of the first additive. The present invention also relates to concrete including such a hydraulic composition and to a water-reducing mixture for such a hydraulic composition.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to the use, during the manufacture of cement, of a composition containing at least one dispersing agent and at least one sacrificial molecule for partially or totally maintaining the properties of the dispersing agent, the composition being in the form of either a liquid solution, an emulsion, or a suspension, the amount of the sacrificial molecule in the composition being at least 5 wt % of the weight of the dispersing agent and being added before or during the grinding of the clinker.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
B01F 17/00 - Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
C04B 24/00 - Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
C04B 28/00 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
The present invention relates to the use of a polymer, obtained through divergent controlled radical polymerization, as a superplasticizer for a hydraulic composition, said polymer including: a central molecule that includes, before the polymerization process, three or more reactive groups selected from among the control agents of the controlled radical polymerization processes; and the same number of comb polymer branches that radially extend from said central molecule and are obtained from monomers selected from among: ethylenically unsaturated mono- and dicarboxylic acids; unsaturated carboxylic acid amides; ethylene monomers comprising a sulfonic acid group and the alkaline or ammonium salts thereof; unsaturated ethylene monomers comprising a secondary, tertiary, or quaternary amine group or a nitrogen-containing heterocyclic group; allyl ethylene monomers comprising ethylene polyoxide (EPO) groupings; (meth)acrylic esters; phosphonate-containing monomers and the phosphonic monoacid and diacid variants thereof; phosphate-containing monomers; monomers having an alkoxysilane group; and the mixtures thereof. Said branches have the same total molar mass, ± 20 %, and the same amount of each monomer, ± 20%.
The present invention relates to an ultra-high-performance ductile concrete including the following components in relative quantities by weight: 100 of Portland cement; 50 to 200 of sand with unique particle size having D10 to D90 of 0.063 to 5 mm, or a mixture of sands, the finest sand having D10 to D90 of 0.063 to 1 mm and the coarsest sand having D10 to D90 of 1 to 5 mm, for example between 1 and 4 mm; 0 to 70 of a pozzolan or non-pozzolan particulate material or a mixture thereof with an average particle size of less than 15 μm; 0.1 to 10 of a water-reducing superplasticiser; 10 to 30 of water; and 0.5 to 5 vol % of the hardened composition of glass fibres with an aspect ratio of 6 to 120, in which at least a plurality of glass fibres are surrounded by a layer including silicon and oxygen, said layer having, at least at one point, a thickness no lower than 3 µm.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The present invention relates to a method for producing clinker having a high belite content, including the following steps: (i) inserting a green material into the calcination chamber of a cement furnace; (ii) calcinating the green material at a temperature of between 1150°C and 1375°C; (iii) measuring the weight per liter of the product from step (ii) and removing the product having a weight per liter strictly lower than 650 g/liter; (iv) measuring the amount of SO3 in the product from step (ii) and removing the product having a ratio between the SO3 amount of the decarbonated green material and the SO3 amount in the product from step (ii) of less than or equal to 0.75 and greater than or equal to 1.2; (v) measuring the amount of free lime (CaOl) in the product from step (ii) and removing the product having a free lime amount strictly higher than 1.5 wt % of free lime in the product from step (ii).
A manufactured cementitious binder including a hydraulic binder in an amount in the range of from about 40 to 75% by weight of the cementitious binder; metakaolin in an amount greater than about 5% by weight of the cementitious binder; silica fume in an amount up to about 15% by weight of the cementitious binder; and cement kiln dust in an amount greater than about 10% by weight of the cementitious binder, the cement kiln dust including chlorine in an amount of at least 0.1% by weight of the cement kiln dust, the cementitious binder providing a cementitious settable composition, when added with water and without a lightweight additive, that has a density lower than about 13 pounds per gallon and greater than about 11 pounds per gallon and a 24 hour compressive strength at 100F, as hardened, of at least 500psi.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
The invention relates to a production method comprising the following steps: the material to be moulded is introduced into a mould (14); the mould is arranged in an envelope (12) comprising a vacuum connection (15); a depression is formed in the envelope by the formation of a gaseous flow through the vacuum connection; the mould is deshaped; the gaseous flow is stopped; and pressure is applied to at least part of the mould, possibly via the envelope, at least once the gaseous flow has been stopped. The invention also relates to a device for moulding parts.
B28B 3/02 - Producing shaped articles from the material by using pressesPresses specially adapted therefor wherein a ram exerts pressure on the material in a moulding spaceRam heads of special form
B28B 3/00 - Producing shaped articles from the material by using pressesPresses specially adapted therefor
The present invention relates to a dry binder premix including, in weight proportions: Portland clinker with a Blaine specific surface area of between 4500 and 9500 cm2/g, preferably between 5500 and 8000 cm2/g, the minimum amount of said clinker in weight percent relative to the total weight of the premix being determined according to the following formula (I): [-6.10-3 x SSBk] + 75 where SSBk is the Blaine specific surface area of the clinker in cm2/g; fly ash; at least one alkaline sulphate, the amount of alkaline sulphate being such that the equivalent amount of Na2O in the premix is at least equal to 5 wt % relative to the weight of fly ash; at least one source of SO3, in an amount such that the amount of SO3 in the premix is at least equal to 2 wt % relative to the weight of the Portland clinker; additional materials having a Dv90 at most equal to 200 μm selected from among limestone powders, calcined schists, metakaolins, silica fillers, silica powders, pozzolanas, slag, fly ash and mixtures thereof; the amount of clinker plus the amount of fly ash being at least equal to 75 wt %, preferably 78 wt %, relative to the total weight of the premix; the total amount of clinker in the premix being strictly less than 60 wt % relative to the total weight of the premix. The invention also relates to a dry binder mix produced by mixing the preceding premix with aggregate, as well as to a wet concrete composition produced by mixing with water.
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.
The present invention relates to a method for preparing a hydrocarbon composition including the following steps: (i) producing a mixture of granulates with a maximum diameter of less than or equal to 30mm and in a quantity of less than or equal to 0.8g per square meter of specific surface developed by the granulates of at least one liquid cationic polymer laden with cations at a density greater than or equal to 0.5 meq/g and an intrinsic viscosity of 0.01 to 0.8 dl/g; and (ii) contacting the mixture produced in step (i) with at least one hydrocarbon binder. A hydrocarbon composition including at least one specific cationic polymer and the use of at least one specific cationic polymer for the surface treatment of granulates for preparing a hydrocarbon composition are the other two aims of the present invention.
The invention relates to a bonding pre-mixture containing: 0.2% to 63% of a material of an ultrafine granulometric class that contains individual D90 particles of less than 1 μm and/or of a specific BET surface area greater than 5 m2/g; 8% to 63% of selected Portland cement that contains D90 particles of less than 30 μm; and 25% to 85% of a material, other than the cement, of a fine granulometric class that contains particles, the D10 and D90 of which are 1 μm to 120 μm and of a specific BET surface area greater than 5 m2/g. The invention also relates in particular to a bonding mixture that contains particles, the D10 and D90 of which are 120 μm to 5 mm, in addition to the pre-mixture of a material of a medium granulometric class.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
99.
FAST HYDRAULIC BINDER FOR PARTS AND CONSTRUCTIONS MADE OF CONCRETE CONTAINING A CALCIUM SALT
The invention relates to a fast hydraulic binder that includes cement, at least a first super-plasticiser, a calcium salt and at least a second super-plasticiser. The second super-plasticiser is different from the first super-plasticiser and includes a main chain and pending groups connected to the main chain and adapted so as to leave the main chain in a basic medium, whereby the second super-plasticiser has a fluidifying action that increases at least temporarily with time in the basic medium.
C04B 24/26 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
100.
METHOD FOR PRODUCING A MIXTURE OF SEVERAL COMPONENTS INCLUDING A HYDRAULIC BINDER
The invention relates to a method for producing a mixture of at least a first and a second component, at least the first or second component being a hydraulic binder, wherein the method includes the following steps: (i) allocating, on the production site of the first component, and to at least one portion of the first component, a data storage device in which at least one identifier of the portion of the first component is stored; (ii) determining the physical and/or chemical characteristics of the portion of the first component; (iii) storing the identifier and the physical and/or chemical characteristics of the portion of the first component; (iv) determining, on the mixture production site, the identifier by reading the data storage device; (v) providing a formulation of the mixture depending on the stored physical and/or chemical characteristics corresponding to the identifier; and (vi) producing said mixture with said formulation, at least partially with said portion of the first component.
B28C 7/06 - Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
C04B 40/00 - Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
