FLEXURAL BEHAVIOR OF FIBER REINFORCED CONCRETE I- BEAMS STRENGTHENED WITH (CFRP)

Experimental investigations of the behavior of rein forced concrete I- beams, strengthened or repaired by carbon fiber Reinforced Polymer (CFRP) for flexural case have been presented in this paper. The current study includes a practical program considers the effect of adding steel and nylon fibers to structural behavior of I- section high strength concrete such as compressive and tensile strength and flexural behavior represent by load-de flection curves also rehabilitate the I- beams after failure in bending by strengthened it with (CFRP) Sheets, variables that studied was the volumetric ratios of fibers which used (0.5, 1 and 1.5) % ratios for steel and nylon and hybrid fiber.