Experimental Studies on the Feasibility of Use of Carbon Fiber ReinforcedPlastics in Repair of Concrete Bridges

摘要

The study presents the experimental and analytical studies on the feasibility ofusing Carbon Fiber Reinforced Plastics (CFRP) in the repair of concrete bridges. The flexural behavior of rectangular reinforced concrete beams strengthened with varying number of externally bonded CFRP plates is presented. The increases in strength and stiffness of the beams provided by the bonded plates were evaluated and compared with those of control beam without plates. Failure loads of the beams were determined by the ACI strain compatibility method. The predicted collapse loads agree reasonably well with the actual failure loads. Theoretical analyses to predict the load-deflection behavior of the beams was performed using ANSYS software. The predicted values agree reasonably well the experimental results.