한국건축시공학회:학술대회논문집 (Proceedings of the Korean Institute of Building Construction Conference)

한국건축시공학회 (The Korean Institute of Building Construction)
권호 표지

Steel단섬유보강 시멘트복합체의 내충격성능

Impact Resistant Performance of Steel Short Fiber-reinforced Cement Based Composites

  • 남정수 (충남대학교 건축공학과) ;
  • 김홍섭 (충남대학교 건축공학과 BK21플러스) ;
  • 최경철 (충남대학교 건축공학과 BK21플러스) ;
  • 이상규 (충남대학교 건축공학과 대학원) ;
  • 손민재 (충남대학교 건축공학과 대학원) ;
  • 김규용 (충남대학교 건축공학과)
  • 발행 : 2017.05.17
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초록

The aim of this study is to investigate the impact resistant performance of steel short fiber-reinforced cement based composites (SFRCCs) containing 1.0, 1.5, 2.0 and 3.0% volume fraction of steel short fibers subjected to high velocity impact of steel projectile (the diameter of 19.05mm and the mass of 28.13g). The gunpowder impact facility was used for impact tests, and the impact velocity was from about 350 to 700m/s. The specimens were damaged in various failure modes, which are penetration, scabbing, and perforation. Comparing with Plain specimen, SFRCCs have superior capacity on the scabbing limit, and slightly bulged in the back side under the impact velocity of 700m/s. In addition, the impact resistant performance of SFRCCs improved with increase of steel short fiber volume ratio. The fibers play an important role in controlling the local damage of SFRCCs.

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