STRENGTHENING OF NORMAL AND HIGH STRENGTH CONCRETE CORBELS WITH HORIZONTAL AND INCLINED STRIPES OF CARBON FIBER

In this study, there were two modes of applying the carbon fiber strips on reinforced concrete corbels: the first one is application three horizontal strips and its width is (50 mm) and the other is applying three inclined strips with angle about (45°), the both modes applied on the two faces of concrete corbel specimens. Two types of concrete were used in this study; normal strength (28 MPa) and high strength concrete (57 MPa). Each types strengthening with two modes of carbon fiber stripes. The ultimate and cracking capacity of tested specimens were improved as a result of strengthening with carbon fiber strips, in addition to development of energy absorption and stiffness characteristics.