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Title |
A Method on the Rapid Assessment of Resistance to Chloride Ion Penetration for Mortar and Concrete with Mineral Admixtures
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Authors |
박정준 ; 김성욱 ; 고경택 ; 이종석 ; 이장화 |
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Keywords |
혼화재; 염소이온; 확산; 통과전하량; admixtures; chloride ion; charge passed; penetration |
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Abstract |
In this study, ASTM C 1202 which is most commonly used for evaluating the penetration resistance into the concrete is reviewed. The test results by ASTM C 1202 showed that the passed charge could be underestimated as the OH? ion concentration in the concrete is lowered when the concrete is mixed with the admixtures. Therefore, the modified method using the distilled water was proposed in the paper. According to the test results, the modified method is not susceptible to OH? ion and temperature rise. In addition, the long term emersion test for the concrete mixed with the admixtures in the NaCl solution showed that the chloride diffusion coefficient tested by the modified method have higher correlation compared to the conventional ASTM method.
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