Abstract
Fiber reinforced polymer (FRP) composites is used as an alternative to steel plate external reinforcement. FRP composites have many advantages over steel plates including a high strength to weight ratio, corrosion resistance, availability in any length, and ease of handling. On the other hand, FRP composites are costly and have no ductility. This chapter reports the testing of five reinforced concrete continuous beams strengthened with externally bonded carbon fiber reinforced polymer (CFRP) composites. All beams have the same geometrical dimensions and internal steel reinforcement. The main parameters studied are the position and form of the CFRP composites. Three of the beams are strengthened using different arrangements of CFRP plate reinforcement, and one is strengthened using CFRP sheets. The performance of the CFRP strengthened beams is compared with that of the unstrengthened control beam. Peeling failure is the dominant mode of failure for all the strengthened beams tested. The beam strengthened with both top and bottom CFRP plates produces the highest load capacity.
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