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

E - Fixed Constructions

04

G

E04G 23/02 (2006.01) E02D 35/00 (2006.01) E04C 5/00 (2006.01)

Patent

CA 2257739

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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