사포 처리한 강섬유의 표면 거칠기가 초고성능 콘크리트의 인발 거동에 미치는 영향

초록

The purpose of this study is to evaluate the influence of surface roughness and shear friction resistance on the pullout behavior of ultra high performance concrete by sanding steel fiber. Experimental results showed that shear friction resistance increased due to abrasion on fiber surface. This is a distinct slip-hardening behavior and it is expected to greatly improve tensile and flexural performance of ultra high performance concrete.