Experimental research on flexural performance of concrete beams strengthened by hybrid fiber CGFRP sheet

Concrete beams strengthened with Hybrid Fiber carbon/glass fiber strengthened polymer (C/GFRP) sheet can not only improve beam ductility, but reduce the cost of the project effectively. It is plays an important engineering application of meaning. In this paper, three concrete beams are strengthened with different fiber (CFRP, C / GFRP and GFRP) in the normal section and a loading failure test. The stress characteristics, failure form, reasonable reinforcement mode, strain condition, bearing capacity, rigidity and deformation capacity of C / GFRP hybrid fiber strengthened beams were studied. The results showed that the flexural load capability and the ductility of the beams strengthened with hybrid C/GFRP are better than that of normal FRP.