Abstract

This rapid-hardening mortar composition includes: a rapid-hardening admixture; cement; and a fine aggregate, wherein the cement is contained in an amount of 100 parts by mass to 2,000 parts by mass with respect to 100 parts by mass of the rapid-hardening admixture, the rapid-hardening admixture is a composition that contains: calcium aluminate; inorganic sulfate in an amount of 50 parts by mass to 200 parts by mass with respect to 100 parts by mass of the calcium aluminate; and a setting modifier in an amount of 0.1 parts by mass to 10 parts by mass with respect to 100 parts by mass of the calcium aluminate, and an average particle diameter of the calcium aluminate is in a range of 8 μm to 100 μm, and an average particle diameter of the setting modifier is in a range of 5 μm or less.

IPC Classes  ?

• C04B 28/06 - Aluminous cements
• C04B 16/06 - Macromolecular compounds fibrous
• C04B 18/14 - Waste materialsRefuse from metallurgical processes
• C04B 22/14 - Acids or salts thereof containing sulfur in the anion, e.g. sulfides
• C04B 24/04 - Carboxylic acidsSalts, anhydrides or esters thereof
• 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
• C04B 103/14 - Hardening accelerators
• C04B 103/46 - Water-loss reducers, hygroscopic or hydrophilic agents
• C04B 103/60 - Agents for protection against chemical, physical or biological attack
• C04B 111/00 - Function, property or use of the mortars, concrete or artificial stone
• C04B 111/72 - Compositions used for repairing existing buildings or building materials

Abstract

The present invention provides a rapid-hardening admixture for accelerating hardening of a cement composition and a method for producing the same. The rapid-hardening admixture includes calcium aluminate, inorganic sulfate, and a setting modifier, in which the calcium aluminate has an average particle diameter in a range of 8 μm to 100 μm, and the setting modifier has an average particle diameter of 5 μm or less.

IPC Classes  ?

• C04B 28/06 - Aluminous cements
• C04B 24/06 - Carboxylic acidsSalts, anhydrides or esters thereof containing hydroxy groups
• C04B 22/10 - Acids or salts thereof containing carbon in the anion, e.g. carbonates
• C04B 22/14 - Acids or salts thereof containing sulfur in the anion, e.g. sulfides
• 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
• C04B 22/00 - Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators
• C04B 103/12 - Set accelerators
• C04B 103/14 - Hardening accelerators

Abstract

This rapid-hardening cement composition includes: a rapid-hardening admixture; and cement in an amount of 100 parts by mass to 2,000 parts by mass with respect to 100 parts by mass of the rapid-hardening admixture, wherein the rapid-hardening admixture is a composition that contains: calcium aluminate; inorganic sulfate in an amount of 50 parts by mass to 200 parts by mass with respect to 100 parts by mass of the calcium aluminate; and a setting modifier in an amount of 0.1 parts by mass to 10 parts by mass with respect to 100 parts by mass of the calcium aluminate, and an average particle diameter of the calcium aluminate is in a range of 8 μm to 100 μm, and an average particle diameter of the setting modifier is in a range of 5 μm or less.

IPC Classes  ?

• C04B 14/30 - Oxides other than silica
• 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
• C04B 28/06 - Aluminous cements
• 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
• C04B 14/28 - Carbonates of calcium
• C04B 16/06 - Macromolecular compounds fibrous
• C04B 18/08 - Flue dust
• C04B 18/10 - Burned refuse
• C04B 14/02 - Granular materials
• C04B 14/46 - Rock wool
• C04B 20/00 - Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups and characterised by shape or grain distributionTreatment of materials according to more than one of the groups specially adapted to enhance their filling properties in mortars, concrete or artificial stoneExpanding or defibrillating materials
• C04B 28/04 - Portland cements
• C04B 111/70 - Grouts
• C04B 103/44 - Thickening, gelling or viscosity increasing agents