UHPC 내에서 곡률을 가진 강섬유의 고속 인발 거동 평가

초록

The purpose of this study is to develop a steel fiber for UHPC which can reduce matrix damage and reinforce it efficiently. It was confirmed that pullout load of fiber increased as the curvature of fiber increased. Moreover, the concentration of the stress can be avoided and the matrix damage is low. As the curvature increased in both the quasi-static and dynamic loads, the pullout load increased. In addition, the pullout load also increased according to increasing loading rate regardless of the curvature.