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http://dx.doi.org/10.14190/JRCR.2017.5.2.113

HCP Evaluation Considering Property of Cement Mortar and Steel Corrosion  

Ryu, Hwa-Sung (Hanyang Experiment and Consulting, Hanyang University ERICA)
Yoon, Yong-Sik (Department of Civil Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.5, no.2, 2017 , pp. 113-120 More about this Journal
Abstract
HCP(Half Cell Potential) method has been widely used since it is recognized as a efficient NDT(Non Destructive Technique) for corrosion detection. This work is for an evaluation of relation between corrosion amount and measured HCP in dried condition through ICM(Impressed Current Method) for accelerating corrosion. For the work, cement mortar specimens with three w/c ratios and four cover depths are prepared, and corrosion test based on ICM is performed for 6 hours, 18 hour, and 42 hours with constant 20V of electrical charge, respectively. From the test, corrosion amount increases with reduced cover depth, increasing w/c ratio, and extended corrosion period, where corrosion amount is evaluated to linearly increases with measured HCP in dried condition. In order to evaluate corrosion amount through measured HCP, the measured HCP level is firstly determined and then corrosion amount is to be compared with measured HCP, which is evaluated to be more reasonable with higher C.O.V.
Keywords
HCP(Half Cell Potential); Steel corrosion; Corrosion amount; Relationship; Dry condition;
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Times Cited By KSCI : 3  (Citation Analysis)
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