Method of strengthening an existing reinforced concrete member

Details Method of strengthening an existing reinforced concrete member Method of strengthening an existing reinforced concrete member

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.

REFERENCES:
patent: 513794 (1894-01-01), Lee
patent: 4147009 (1979-04-01), Watry
patent: 4574545 (1986-03-01), Reigstad et al.
patent: 4646493 (1987-03-01), Grossman
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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