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충남대학교

충남대학교 건설재료시공학연구실

Building material & construction lab.

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프린트 확대 축소

국내전문학술

김상희, 홍성걸, 윤현도, 김규용, & 강현구. (2015). 와이어매쉬와 강섬유로 보강된 콘크리트 패널의 내충격성 규명을 위한 고속충격실험. 콘크리트학회 논문집, 27(2), 103-113.
김상희, 홍성걸, 윤현도, 김규용, & 강현구. (2015). 와이어매쉬와 강섬유로 보강된 콘크리트 패널의 내충격성 규명을 위한 고속충격실험. 콘크리트학회 논문집, 27(2), 103-113.
작성자 관리자
조회수 68 등록일 2015.04.01
주저자 김상희
교신저자 042-821-7731
공동저자 홍성걸, 윤현도, 김규용
학술지명 한국콘크리트학회논문집
This paper studies impact performance of wire-mesh and steel fiber-reinforced concrete based on high-velocity
impact experiments using hard spherical balls. In this experimental study, panel specimens were tested with various parameters such as steel fiber volume fraction, presence/absence of wire mesh, panel thickness, impact velocity, and aggregate size for the comparison of impact resistance performance for each specimen. While improvement of the impact resistance for reducing the penetration depth is barely affected with steel fiber volume fraction, the impact resistance to scabbing and perforation is improved substantially. This was due to the fact that the steel fiber had bridging effects in concrete matrix. The wire mesh helped minimizing the crater diameter of front and back face and enhanced the impact resistance to scabbing and perforation; however, the wire mesh did not affect the penetration depth. The wire mesh also reduced the bending deformation of the specimen with wire mesh, though some specimens had splitting bond failure on the rear face. Additionally, use of 20 mm aggregates is superior to 8 mm aggregates in terms of penetration depth, but for reducing the crater diameter on front and back faces, the use of 8 mm aggregates would be more efficient.