균열특성에 따른 콘크리트 구조물의 염분침투에 관한 실험적 연구

Repid Corrosion Test on Reinforcing Steels in Chloride-Penetrating Concrete Structures with Various Crack Patterns

  • 이상국 (중앙대학교 토목환경공학과) ;
  • 정영수 (중앙대학교 토목공학과) ;
  • 문홍식 (중앙대학교 토목환경공학과) ;
  • 안태송 (한국도로공사 도로연구소) ;
  • 유환구 (한국도로공사 도로연구소)
  • 발행 : 2001.05.01

초록

Reinforced concrete is, in general, known as a high durability material due to a strong alkalinity of cement. Probable concrete cracks could incur steel corrosion of RC structures and then could easily deteriorate the concrete durability, which can be fully secured by a systematic quality control for the construction of concrete structures. For the corrosion protection of reinforcing steels in concrete, however, current design specifications of concrete cover depth do not in-depth consider the effect of the cracks as well as the chloride content of RC structures. Therefore, appropriate provisions for concrete cover depth should be coded by considering the influence of concrete cracks on the corrosion of reinforcing steels. The objective of this research is to investigate pertinent cover depth, which can prohibit rebar corrosion, on the basis of experimental corrosion measurements of reinforcing steels on crack characteristics such as the width, depth and frequency of concrete cracks.

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