건설재료시공학연구실
Building material & construction lab.

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이상규, 김규용, 황의철, 손민재, 남정수, 김홍섭 (2019), Tensile Behaviour of Fiber reinforced Cementitious Composite by Strain rate, 2019 Design and Analysis of Protective Structures
이상규, 김규용, 황의철, 손민재, 남정수, 김홍섭 (2019), Tensile Behaviour of Fiber reinforced Cementitious Composite by Strain rate, 2019 Design and Analysis of Protective Structures
작성자	관리자
조회수	165	등록일	2019.12.04
주저자	손민재
교신저자	042-821-7731
공동저자	이상규, 황의철, 사수이, 남정수
학술지명	2019 Design and Analysis of Protective Structures
ABSTRACT The strain rate effect on the tensile behavior of hybrid fiber reinforced cementitious composites was evaluated according to the blending ratio of hooked steel fiber (HSF) and polyvinyl alcohol fiber (PYA). The tensile strength, strain capacity, peak toughness, and softening toughness were considered. In the experimental result, the specimen with 1.5 vol.% HSF and 0.5 vol.% PYA (HSF1.5PYA0.5) exhibited the highest tensile strength and softening toughness. However, the strain capacity and peak toughness were less than those of the specimen with 2.0 vol.% HSF (HSF2.0). Nevertheless, HSF 1.5PYA0.5 exhibited the highest dynamic increase factors (DIFs) for the tensile strength, strain capacity, and softening toughness. HSF2.0 showed a higher DIF for the peak toughness than HSF1.5PYA0.5. But HSF1.5PYA0.5 is expected to exhibit a higher DIF for the peak toughness than HSF2.0 at high strain rates (> 10 1/s), because it have highest strain rate sensitivity of the tensile strength and strain capacity