The Analysis of Chloride Ions Intrusion into Concrete Structure

콘크리트 구조물의 염분 침투해석

  • 여경윤 (서울산업대학교 토목공학과) ;
  • 김은겸 (서울산업대학교 토목공학과) ;
  • 심치범 (아주대학교 화학공학과) ;
  • 조원일 (한국과학기술연구원) ;
  • 이윤한 (도화종합기술공사 항만부)
  • Published : 1997.10.01

Abstract

Recently, premature reinforcement corrosion in concrete structures exposed to chloride containing environments has an important problem. This is due to an increasing use of marine aggregate of chloride containing admixture a the mixing stage and due to an increase of concrete construction in marine environments. In this study, the behavior of chloride ions introduced into concrete from concrete surface by a marine environment was modeled. The physicochemcial processes including the diffusion of chloride ion in aqueous phase of pores, the adsorption and desorption of chloride ions to and from the surface of solid phase of concrete, and the chemical reaction of chloride ion with solid phase were analyzed by using the finite element method. The results of this study may be used to predict the onset of reinforcement corrosion, and identify the maximum limit of chloride ions contained in admixtures.

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