콘크리트 강도에 따른 탄소섬유시트의 보강효과에 관한 실험적 연구

The durability of a concrete structure decreases over time due to external and internal factors. Therefore, appropriate reinforcement is required depending on the situation. One reinforcement method is attaching carbon-fiber-reinforced plastic to a structure. This construction method is used in various applications, such as buildings and bridges. In this study, an experiment was conducted on the reinforcement effect of carbon fiber sheets on concrete that has decreased strength due to the aging of the structure. A flexibility test was performed on a member to which carbon fiber sheet was attached to determine the degree of improvement in the performance based on the ductility and behavior. The experimental data show that the strength of concrete can affect the cracking and destruction patterns of the reinforced member. In addition, the adhesive strength and destruction pattern vary depending on the strength of concrete. The analysis shows that the concrete strength is related to various results such as the bending capacity, adhesion strength, and destruction pattern when reinforcing it with carbon fiber sheets.