Evaluation of CFS Tensile Strength Reduction Factor for Bending Analysis of RC Beams Strengthened with Carbon Fiber Sheets

탄소섬유시트 보강보 휨해석에 영향을 미치는 섬유시트 인장강도 감소계수 평가

Carbon fiber sheet is attractive due to its good tensile strength, resistance to corrosion, and low weight. The strengthening of concrete structures with externally bonded carbon fiber sheets is increasingly being used for repair and rehabilitation of existing structures. However CFS strengthened beams break down under the service loads. As rupture strain is not reached ultimate value, reduction of the tensile strength is recommended. This study evaluate CFS tensile strength reduction factor which is required to analyze bending moment.