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Evaluation of Impact Resistance of Steel Fiber and Organic Fiber Reinforced Concrete and Mortar
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  • Evaluation of Impact Resistance of Steel Fiber and Organic Fiber Reinforced Concrete and Mortar
  • Evaluation of Impact Resistance of Steel Fiber and Organic Fiber Reinforced Concrete and Mortar
저자명
Kim. Gyu-Yong,Hwang. Heon-Kyu,Nam. Jeong-Soo,Kim. Hong-Seop,Park. Jong-Ho,Kim. Jeong-Jin
간행물명
한국건축시공학회지
권/호정보
2012년|12권 4호|pp.377-385 (9 pages)
발행정보
한국건축시공학회
파일정보
정기간행물|ENG|
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기타
이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
서지반출

기타언어초록

In this study, the Impact resistance of steel fiber and organic fiber reinforced concrete and mortar was evaluated and the improvement in toughness resulting from an increase in compressive strength and mixing fiber for impact resistance on performance was examined. The types of fiber were steel fiber, PP and PVA, and these were mixed in at 0.1, 0.5 and 1.0 vol.%, respectively. Impact resistance is evaluated with an apparatus for testing impact resistance performance by high-speed projectile crash by gas-pressure. For the experimental conditions, Specimen size was $100{ imes}100{ imes}20$, 30mm ($width{ imes}height{ imes}thickness$). Projectile diameter was 7 and 10 mm and impact speed is 350m/s. After impact test, destruction grade, penetration depth, spalling thickness and crater area were evaluated. Through this evaluation, it was found that as compressive strength is increased, penetration is suppressed. In addition, as the mixing ratio of fiber is increased, the spalling thickness and crater area are suppressed. Organic fibers have lower density than the steel fiber, and population number per unit area is bigger. As a result, the improvement of impact resistance is more significant thanks to dispersion and degraded attachment performance.