A Study on Mechanical Properties of Concrete at Elevated Temperatures

고온에서의 콘크리트 재료 역학적 특성에 관한 연구

  • 박찬규 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 김규용 (충남대학교 건축공학과) ;
  • 이승훈 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 박주헌 (삼성물산(주) 건설부문 기술본부 기술연구소) ;
  • 김영선 (충남대학교 건축공학과 대학원)
  • Published : 2006.11.04

Abstract

The effects of high temperature on strength, elastic modulus and strain at peak stress of concrete were experimentally investigated. The type of test was the stressed test that a preload was applied to the specimen prior to heating and the load was sustained during the heating period. In this study, the level of preload was 25% of compressive strength at room temperature. All tests were conducted at various temperatures(20,100, 200, 300, 400, 500, 600 and $700^{\circ}C$) for concretes made with W/B ratios 46% and 32%. Test results showed that on the whole, the relative values of strength and elastic modulus, and the real strain value at peak stress were not influenced by the W/B ratio.

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