고성능 탄소섬유봉으로 보강된 철근콘크리트 보의 휨거동에 관한 연구

A Study on the Flexural Behavior of RC Beams Strengthened with High-Performance Carbon Fiber Bars

An experimental study was carried out to investigate the flexural behavior of RC beams strengthened with high-performance carbon fiber bars. Specimens designed with the conventional retrofitting method were also tested to compare load-carrying capacity and ductility. As the results, specimens strengthened with high-performance carbon fiber bars showed much higher load-carrying capacity and ductility compared to specimens strengthened with a steel plate and carbon fiber sheets. The failure mechanism of the specimen strengthened with a high-performance carbon fiber bar was bond-slip, whereas that of the others were interface debonding or rip-off.