Bond characteristics by joint condition between old and. new concrete

신ㆍ구 콘크리트의 접합면 조건에 다른 부착특성

  • 주봉철 (한국건설기술연구원 구조시스템그룹) ;
  • 김영진 (한국건설기술연구원 구조시스템그룹) ;
  • 김병석 (한국건설기술연구원 구조시스템그룹) ;
  • 박성룡 (한국건설기술연구원 구조시스템그룹) ;
  • 김덕진 (명지대학교 토목환경공학과)
  • Published : 2003.05.01

Abstract

In these days, the deterioration of bridges make it necessary for decks to be replaced and it is inevitable to apply the precast decks to minimize the traffic control induced from the deck placement. This precast deck construction makes the physically discontinuous interface between old and new concrete. Usually, the adhesive force at this interface are ignored. However, for crack behavior and reliable long term behavior, it is required to evaluate the exact value of the cohesive force at the interface. This research investigates the cohesive characteristics at the interface. Four different interface surface conditions are tested and three different methods are used to measure the cohesive strength at the interface. In addition, cohesive characteristic at the surface between precast panels are investigated with different interface surface conditions.

Keywords