건설재료시공학연구실
Building material & construction lab.

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이상규, 김규용, 김홍섭, 손민재, & 남정수. (2016). 반구형과 평탄형 선단 비상체의 충돌을 받는 콘크리트의 파괴특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 20(6), 98-105.
이상규, 김규용, 김홍섭, 손민재, & 남정수. (2016). 반구형과 평탄형 선단 비상체의 충돌을 받는 콘크리트의 파괴특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 20(6), 98-105.
작성자	관리자
조회수	104	등록일	2016.11.14
주저자	이상규
교신저자	042-821-7731
공동저자	김홍섭, 손민재, 남정수
학술지명	한국구조물진단유지관리공학회
Abstract In this study, projectiles with 2 kinds of nose shape: spherical and flat were impacted into normal concrete and fiber reinforced concrete panels. The fracture depth and form, crater diameter, tensile strain at rear face were evaluated. It was confirmed that smaller projectile nose areas resulted in deeper penetrations associated with concentrated impact forces and small front-face crater diameters in impact test. Conversely, larger projectile nose areas resulted in shallower penetrations and larger front-face fracture diameters. Similar front-face failure and strain distribution relationships based on the projectile nose shape were observed for normal and fiber-reinforced concrete although the rear-face tensile strain and scabbing were significantly reduced by the fiber reinforcement. In addition, a direct relationship was confirmed between the penetration depth based on the projectile nose shape and the tensile strain on the rear face. Thus the impact strain behavior is required to predict the scabbing behavior with penetration depth.