Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
권호 표지

Prediction Model of Chloride Penetration in Concrete Bridge Deck Considering Environmental Effects

대기 환경조건을 고려한 콘크리트 교량 바닥판의 염소이온 침투 예측 모델

  • Kim, Eui-Sung (Civil Development Team, Hyundai Development Company)
  • 김의성 (현대산업개발 토목개발팀)
  • Published : 2008.08.31
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Abstract

Recently, the deterioration of reinforced concrete structures, primarily due to corrosion of steel reinforcement, has become a major concern. Chloride-induced deterioration is the most important deterioration phenomenon in reinforced concrete structures in harsh environments. For the realistic prediction of chloride penetration into concrete, a mathematical model was developed in which the effects of diffusion, chloride binding and convection due to water movement can be taken into account. The aim of this research was to reach a better understanding on the physical mechanisms underlying the deterioration process of reinforced concrete associated with chloride-induced corrosion and to propose a reliable method for estimating these effects. Chloride concentrations coming from de-icing salts are significantly influenced by the exposure conditions such as salt usage, ambient temperature and repeated wet-dry cycles.

Keywords

References

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