USE OF CFRP LAMINATES FOR STRENGTHENING OF REINFORCED CONCRETE CORBELS

This work consists of fabrication and testing of sixteen reinforced concrete corbels. Fourteen of these corbels have been strengthened or repaired by various plies of Carbon Fiber Reinforced Polymer (CFRP) laminates. The experimental variables considered in the test program include, the CFRP pattern scheme (i.e. location, orientation, and number of layers), bond type (partial warping, full warping, and using CFRP anchors), and damaged ratio. Two modes of failure were observed, debonding and rupture of the CFRP laminates. Significant increase in ultimate capacity ranging from 17% to 71% was registered in the strengthening specimens and from 13% to 65% in repaired specimens.