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충남대학교

충남대학교 건설재료시공학연구실

Building material & construction lab.

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프린트 확대 축소

국내전문학술

김홍섭, 김규용, 이상규, 손민재, & 남정수. (2017). 변형 속도에 따른 후크형 강섬유 및 폴리아미드섬유보강 시멘트 복합체의 압축 및 인장강도 특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 21(3), 76-85.
김홍섭, 김규용, 이상규, 손민재, & 남정수. (2017). 변형 속도에 따른 후크형 강섬유 및 폴리아미드섬유보강 시멘트 복합체의 압축 및 인장강도 특성. 한국구조물진단유지관리공학회 논문집 (KSMI), 21(3), 76-85.
작성자 관리자
조회수 108 등록일 2017.05.01
주저자 김홍섭
교신저자 042-821-7731
공동저자 이상규, 손민재, 남정수
학술지명 한국구조물진단유지관리공학회 논문집 제 21권 제 3호
Abstract
In this study, to evaluate the mechanical properties of fiber-reinforced cement composites by strain rate, hydraulic rapid loading test system was developed. And compressive and tensile strength of the hooked steel fiber and polyamide fiber reinforced cement composite were evaluated. As a result, the compressive strength, strain capacity and elastic modulus were increased with increasing strain rate. The effect of compressive strength by type and volume fraction of fibers was not significant. The dynamic increase factor(DIF) of the compressive strength was higher than that of the CEB-FIP model code 2010 and showed a trend similar to that of ACI-349. The tensile strength and strain capacity were increased with increasing strain rate. The hooked steel fibers were drawn from the matrix. The tensile strength and strain capacity of hooked steel fiber reinforced cement composites were increased as the strain rate increased. The tensile strength and deformation capacity of the fiber reinforced cement composites were increased. And, hooked steel fibers were drawn from the matrix. On the other hand, because the bonding properties of polyamide fiber and matrix is large, polyamide fiber was cut-off with out pullout from matrix. The strain rate effect on the tensile properties of polyamide fiber reinforced cement composites was found to be strongly affected by the tensile strength of the fibers.