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Title |
Chloride Penetration Analysis of Fly Ash Concrete using Potentiometric Titration and XRF
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Authors |
서은아(Eun-A Seo) ; 김지현(Ji-Hyun Kim) ; 이호재(Ho-Jae Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.5.16 |
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Keywords |
원자력발전소; 콘크리트; 내구성; 염화물량; X-선형광분석 Nuclear power plant; Concrete; Durability; Chloride amount; XRF |
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Abstract |
In this study, a salt water immersion test was performed on concrete specimens simulating the concrete mix design of the nuclear power plant, and the correlation between the amount of chloride and the XRF component according to the depth of the concrete was analyzed. The amount of chloride on the surface of the nuclear power plant concrete increased slightly with increasing immersion time in salt water, but the amount of chloride in the depth of 5.5 mm or more showed a clear tendency to increase with increasing immersion time in salt water. As a result of analyzing the correlation between the amount of chloride in concrete and the XRF component, the concrete with 20% FA substitution compared with the OPC concrete showed a very high correlation between the composition ratio of Cl ions and the evaluation result of salt damage resistance by XRF component analysis. Accordingly, it was confirmed that chlorine ion analysis and salt damage resistance performance evaluation by XRF component analysis were possible through repeated data accumulation in the nuclear power plant concrete mix with 20% fly ash replacement.
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