Plastic and nonmetallic article shaping or treating: processes – Repairing or restoring consumer used articles for reuse – Inorganic material containing articles
Patent
1997-07-01
1999-04-13
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Repairing or restoring consumer used articles for reuse
Inorganic material containing articles
156 94, 156 98, 264 35, 264 362, 264228, 264229, B32B 3500, E04B 116
Patent
active
058940030
ABSTRACT:
Parallel spaced grooves are cut within the surface of an existing reinforced concrete member in the direction of bending and at locations where existing tensile reinforcing is inadequate. Elongated reinforcing elements, such as composite rods with continuous carbon fibers, are positioned within the grooves, after a curable bonding material, such as an epoxy resin, is inserted into each groove so that the bonding material surrounds the reinforcing element. The material is formed flush with the surface and allowed to cure to bond each reinforcing element to the concrete defining the corresponding groove. The grooves and reinforcing elements extend within the top surface of a concrete slab across a beam or support for the slab, extend within the bottom surface of the slab at least fifty percent of the distance between adjacent supports for the slab, or within a vertical surface of a concrete or masonry wall or column.
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patent: 4700516 (1987-10-01), Grossman
patent: 5115611 (1992-05-01), Ammann et al.
patent: 5373675 (1994-12-01), Ellison, Jr.
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