건설재료시공학연구실
Building material & construction lab.

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최경철, 김규용, 김홍섭, 황의철, & 남정수. (2019). 비정질강섬유를 혼입한 초고강도콘크리트의 폭렬특성에 관한 실험적 연구. 한국구조물진단유지관리공학회 논문집 (KSMI), 23(3), 111-118.
최경철, 김규용, 김홍섭, 황의철, & 남정수. (2019). 비정질강섬유를 혼입한 초고강도콘크리트의 폭렬특성에 관한 실험적 연구. 한국구조물진단유지관리공학회 논문집 (KSMI), 23(3), 111-118.
작성자	관리자
조회수	105	등록일	2019.05.01
주저자	최경철
교신저자	042-821-7731
공동저자	김규용,김홍섭,황의철
학술지명	2019 한국구조물진단유지관리공학회 논문집 Vol 23 3호
Abstract This study examined the effect of amorphous metallic (AM) fibers on the spalling properties of ultra high strength concrete. Six specimens with concrete strengths of 100 MPa and 150 MPa were evaluated with mix proportions of polypropylene (PP) fibers of 0.15% by concrete volume, and proportions of AM fibers of 0.3% and 0.5% by concrete volume. These specimens were then heated in accordance with the ISO-834 heating curve. The movement of water vapor through a pore network formed by molten PP fibers was found to be a dominant factor controlling the spalling of high-strength concrete. Spalling control was not found to be significantly affected by the addition of 0.3% AM fibers; however, when 0.5% AM fibers was added, cracking was limited and so were paths for water vapor migration, increasing the likelihood of a moisture clog and creating the differential internal pressure often blamed for concrete spalling.