건설재료시공학연구실
Building material & construction lab.

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김상희, 강현구, 홍성걸, 김규용, & 윤현도. (2014). 고속충격하중을 받는 강섬유보강콘크리트 패널의 내충격성능. 콘크리트학회 논문집, 26(5), 731-739.
김상희, 강현구, 홍성걸, 김규용, & 윤현도. (2014). 고속충격하중을 받는 강섬유보강콘크리트 패널의 내충격성능. 콘크리트학회 논문집, 26(5), 731-739.
작성자	관리자
조회수	75	등록일	2014.12.01
주저자	김상희
교신저자	042-821-7731
공동저자	강현구, 홍성걸, 김규용
학술지명	한국콘크리트학회논문집
This paper describes the evaluation of the impact performance of steel fiber-reinforced concrete based on high-velocity impact experiments using hard spherical balls. In this experimental study, panel specimens with panel thickness to ball diameter (h/d) ratios of 3.5 or less were tested with variables of steel fiber volume fraction, panel thickness, impact velocity, and aggregate size. Test results were compared with each other to evaluate the impact resistance. The results showed that the percentage of weight and surface loss decreased as the steel volume fraction increased. However, the penetration depth increased with up to steel fiber volume fraction of 1.5%. Particularly the results of specimens with 20 mm aggregates showed poorer performance than those with 8 mm aggregates. The results also confirmed that the impact performance prediction formulas are conservative with (h/d) ratios of 3.5 or less. Despite the conservative predictions, the modified NDRC formula and ACE formula predict the impact performance more consistently than the Hughes formula.