The joints in this construction are formed through the bonding shear evaluation method during the placement of ultra-high-performance concrete (UHPC). The evaluation items include push-off tests for homogeneous UHPC + UHPC. The experimental samples comprised a monolithic placement as the baseline, two levels for the separated placement according to the compression strength of concrete, and five levels for the interface treatment. The bonding shear performance for the homogeneous UHPC + UHPC construction linearly increased with the width and depth of the grooves used for the interface treatment. The increase in the number of grooves and their cross-sectional areas only slightly influenced the bonding shear performance. The optimal interface treatment method for the homogeneous UHPC + UHPC construction grooves was at least 30 mm.

Abstract
 1. 서 론
 2. 실험개요
 3. 실험결과 및 고찰
 4. 결 론
 참고문헌

• 장현오(한양대학교 건설구조물 내구성혁신 연구센터) | Jang, Hyun-O
• 문동환(한양대학교 건축시스템공학과) | Mun, Dong-Hwan
• 이한승(한양대학교 건축학부) | Lee, Han-Seung 교신저자