The Effect of Fiber Length and Specimen Size on Spalling and Temperature Distribution in High Strength Concrete Specimen

고강도 콘크리트 부재에서 섬유 길이와 부재 크기가 폭렬 특성 및 온도 분포에 미치는 영향

  • 박찬규 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 이승훈 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 손유신 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 김한준 (삼성물산(주) 건설부문 기술본부 기술연구소)
  • Published : 2006.05.11

Abstract

Recently, in order to reduce the spalling of high strength concrete under fire, the addition of organic fibres to high strength concrete has been investigated. In this study, the effect of fiber length and specimen size on the spalling and temperature distribution in high strength concrete specimen was experimentally investigated. Three HSC specimens measuring $305{\times}305mm$, $500{\times}500mm$ and $700{\times}700mm$ with the fiber were prepared. The fiber length was 6mm and 10mm. As a result, it appears that when the remaining ratios(by weight) of fibre at $300^{\circ}C$ and $350^{\circ}C$ are less than 80% and 50%, respectively, the spalling of high strength concrete is prevented.

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