시공조인트 계면 처리방법에 따른 초고성능 콘크리트의 전단접착성능평가에 관한 실험적 연구

Abstract

The purpose of this study is to find the optimal concrete adhesion surface treatment about the construction joint when placing the UHPC. The adhesion surface treatments about the UHPC are a standard, a wire-brushing before harden, a resin adhesive, a silica fume mortar, a retardant+water-jet and the press and we accordingly implement the bonding shear performance evaluation. In conclusion, the interface preparation using a retardant and water-jet is a highest value of the specimens that the bonding shear strength is 42.1MPa. and the interface preparation using a silica fume mortar is a lowest value of the specimens that the bonding shear strength is 5.5MPa.