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Title |
Chloride Diffusion in Hardened Concrete with Concrete Properties and Testing Method
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Keywords |
부식; 염화물 이온; 확산계수; 농도 프로파일; 침투 깊이; Corrosion; chloride ion; diffusion coefficient; concentration profile; penetration depth |
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Abstract |
Corrosion of reinforcement is the main cause of damage and early failure of reinforced concrete structures. The corrosion is mainly progressed by the chloride ingress. In this paper, an experimental study is executed to investigate the effect of concrete properties and testing methods on the coefficients of chloride diffusion. Also, it is surveyed the relationship between total chloride and free chloride in concrete. According to this experiment results, W/C ratio and testing method affect chloride diffusion coefficient of concrete. As W/C ratio is increased, diffusion coefficient in concrete is also increased. Diffusion coefficient obtained by each testing method show the different values, respectively. The model equation of diffusion coefficient with W/C ratio is proposed
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