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Title |
Diffusion Characteristics of Chloride ion under Single and Combined Attacks in Concrete Structures
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Authors |
오병환 ; 강의영 ; 인광진 ; 이성규 ; 서정문 |
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Keywords |
복합열화; 염해; 황산염; 중성화; 표면염소이온농도; 염소이온확산계수; combined deterioration; chloride; sulfate; carbonation; surface chloride content; diffusion coefficient |
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Abstract |
Durability is a major concern in the design and construction of concrete structures which are located in the sea environments. In particular, the combined action of chlorides, sulfates, and carbonation nay influence greatly the deterioration behavior of concrete structures. The purpose of the present study is to explore the diffusion characteristics of chloride ions in concrete structures under combined deterioration conditions. The present test results indicate that the chloride penetration into concrete structures is more pronounced under combined attacks of chlorides, sulfates and carbonation. The diffusion coefficients and surface chloride contents were found to increase under combined multiple deterioration conditions. The present study provides quantitatively the penetration and diffusion characteristics of chloride ions in concrete structures under various deterioration conditions. The results of present study may be efficiently used for the realistic design of concrete structures under combined deterioration conditions.
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