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http://dx.doi.org/10.14190/JRCR.2022.10.1.124

Relationship Analysis between Half Cell Potential and Open Circuit Potential Considering Temperature Condition  

Yoon, Yong-Sik (Department of Civil and Environmental Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.1, 2022 , pp. 124-132 More about this Journal
Abstract
The corrosion potential in concrete varies greatly with exposure and concrete mix conditions. In this study, RC (Reinforcement Concrete) samples were prepared considering cover depth, chloride concentration, and W/C(water to cement) ratio as variables, and HCP(Half Cell Potential) was measured, which evaluated comparative potential between embedded steel and concrete surface. In addition, OCP(Open Circuit Potential) was measured using buried steel and CE(Counter Electrode). Agar and NaOH solution were used as ion exchange materials and Hg/HgO was used for RE(Reference Electrode), which was more sensitive to temperature than HCP. Among the influencing factors, the exposure period and chloride concentration had a relatively greater effect than cover depth and w/c ratio. Additionally, the entire measured HCP and OCP showed a clearly linear relationship with increasing cover depth and w/c ratio. Through multiple regression analysis, the relationship between HCP and OCP was quantified, and an improved correlation was obtained with temperature effect.
Keywords
HCP; OCP; Cover depth; Chloride concentration; Temperature; Water to cement ratio;
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Times Cited By KSCI : 1  (Citation Analysis)
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