A structural fabric suitable for lining pipes and pipes lined with the structural fabric. The fabric includes a strengthening layer laminated to a watertight layer. The strengthening layer may include carbon fiber bundles stitched to a watertight layer of woven glass fibers. In some embodiments, the strengthening layer includes lengthwise oriented carbon fiber bundles and widthwise oriented carbon fiber bundles bound together in a non-woven, non-crimp arrangement. The widthwise oriented bundles can have about three times greater weight per unit area than the lengthwise oriented bundles. The watertight layer provides a watertight barrier when impregnated with the curable polymer, applied to the interior surface of the pipe, and cured. The watertight layer may include lengthwise and widthwise oriented bundles of glass fiber woven into one of a satin and twill weave.
In a method of reinforcing a pipe (1), a water penetration resistant layer and strengthening layer of fibrous material are impregnated with a curable polymer, positioned in a lining position near the pipe (1), and cured to form a water penetration resistant liner (12) and a strengthening liner (10). The two layers can be impregnated and positioned separately or at once, for example, as a composite liner. Together, the liners provide a waterproof barrier and structural reinforcement to the resulting pipe. In a method of waterproofing a reinforced pipe (1), a water penetration resistant layer is impregnated with curable polymer, positioned over a previously installed reinforcing liner, and cured to form a waterproof barrier inhibiting ground water egress into the pipe (1). In certain embodiments of the methods, the water penetration resistant layer includes fibers woven in one of a satin weave and a twill weave.
F16L 55/168 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
F16L 55/162 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
F16L 55/163 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe
F16L 55/175 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
B29C 63/00 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor
A method of repairing a section of a pipe (1) including a breach (3) in the pipe. A surface of a wall of the pipe is prepared generally around the breach (3). A piece of conformable material (5) of the type capable of carrying a curable polymer is sized in relation to a size of the breach (3). The sized piece of conformable material (5) is applied to the prepared surface so that the breach (3) is covered by the piece of conformable material (5). The piece of conformable material (5) is impregnated with a curable polymer. The curable polymer is cured within the piece of conformable material (5) thereby to seal the breach (3) against egress of groundwater into the pipe (1).
A method of reinforcing a column positioned proximate a blocking structure that prevents wrapping a sheet material completely about the column. The column includes an exterior perimeter surface portion extending between first and second intersections with the blocking structure so that the exterior perimeter surface portion is accessible from one side of the blocking structure. A first opening is formed in the column and/or the blocking structure. The first opening is located proximate the first intersection of the exterior perimeter surface portion of the column and the blocking structure. A portion of the first fiber anchor is inserted through the first opening. The first fiber anchor has at least a first end. The first end of the first fiber anchor is secured to the exterior perimeter surface portion of the column. An outer fibrous sheet is applied to the exterior perimeter surface portion.
A high strength liner can be applied to pipes in a very thin layer and yet provide the ability to withstand high operating pressures. The liner is useful for any pipe, but has particular application to small diameter pipe where there is less room to accommodate a reduction in diameter caused by pipe lining. Methods for lining are also disclosed.
Systems and methods for reinforcing a pipe. A robot is adapted for rotating in a pipe to apply resin and/or fiber to an inner surface of a pipe in a generally helical pattern. Application of resin and/or fiber to the pipe may be actively adjusted to achieve desired application. A rate at which the robot moves along the pipe per revolution of the robot can be may be adjustable. A rate at which fiber is advanced toward the inner surface of the pipe may be adjustable for application of the fiber to the inner surface of the pipe in a generally non-tensioned state.
F16L 55/1645 - Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe
F16L 55/18 - Appliances for use in repairing pipes
7.
SYSTEM AND METHOD FOR INCREASING THE SHEAR STRENGTH OF A FRAMED STRUCTURE
Reinforcing system for retrofitting wall to increase the ductility and resistance to shear forces of a gypsum board wall to a level comparable to plywood-sheathed wall. Fiber-reinforced polymer panel is attached to substantially cover surface of gypsum board to protect it against rupture in earthquake. Reinforcement is enhanced by fiber anchors installed along base of wall and door frames. Connector strips tie together frame members to prevent separation from wall.
E04H 9/02 - Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
8.
EXPANDABLE LINER FOR THE PROTECTION AND STRENGTHENING OF EXISTING PIPES
A method of lining an interior of a pipe in need of repair comprises providing a carrier tube having one or more expandable materials, coating the carrier tube with a binder, securing one or more layers of a fiber-laden material along an exterior surface of the carrier tube with the assistance of the binder. The carrier tube comprises a first diameter while the carrier tube is being delivered to the targeted located inside the pipe in need of repair. The method additionally comprises radially expanding the carrier tube from the first diameter to a second diameter, such that the one or more layers of the fiber-laden material and the binder at least partially contact and/or adhere to an interior wall of the pipe.
A method of reinforcing a pipe or other structure using fiber reinforced polymer includes coating a raw carbon and/or other types of fiber roving with an epoxy or other resin, selectively directing the fiber roving through a positioning assembly of a reinforcing system, splaying the fiber roving that exits the positioning assembly onto a pipe wall or other surface, rotating the positioning assembly about an axis to place splayed fiber roving along a first circumferential section of the pipe wall or other surface and moving the positioning assembly along a longitudinal axis of the pipe or other structure to selectively place splayed fiber roving along a second circumferential section of the wall.
