A Study on Minimizing for Hydration Heat Cracks of a Subway Concrete Box Structure

지하철 콘크리트 BOX 구조물의 수화열에 의한 균열저감 대책 연구

  • 김은겸 (서울산업대학교 토목공학과) ;
  • 윤석구 (서울산업대학교 토목공학과) ;
  • 배상일 (서울산업대학교 토목공학과) ;
  • 정재용 (GS건설) ;
  • 김현철 (GS건설 기본본부 토목구조팀) ;
  • 허정옥 (GS건설 기본본부 토목구조팀)
  • Published : 2006.05.11

Abstract

The bigger of concrete strctures by a construct technique improvement, and the increase of the cement quantity which is caused by with use of the high-strength concrete for the load-carrying-capacity and a durability cause temperature cracks by a heat of hydration. The temperature crack due to the heat of hydration classified a nonstructural crack. but it has a bad effect on durability of concrete structures. especially, in case of a subway concrete box structure, when a water-proof facilities is beaked on an outer-wall, the water leakage occurs through a penetration crack generated from a wall of the concrete structure too. This paper, for the subway concrete box strucuture, the use of blended cement, the temperature of air and concrete, control joint, was considered and analysed by a three dimensional finite element method.

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