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Published in:
2011 | OriginalPaper | Chapter
A Study on the Applicability of ECE Technique on Chloride Contaminated Concrete Retrofitted with FRP Strips
Authors : Matthew Anderson, Indrajit Ray, An Chen, Julio Davalos
Published in: Advances in FRP Composites in Civil Engineering
Publisher: Springer Berlin Heidelberg
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The objective of this study is to evaluate whether the Electrochemical Chloride Extraction (ECE) technique, which has been proven to be an effective tool for removing chloride ions for regular concrete structures, can be effectively used for Fiber-Reinforced Polymer (FRP) repaired concrete structures. FRP retrofit for deteriorated concrete structures is a highly successful practice, but alone it does not address the corrosion at its source: accumulated chloride ions from environmental sources such as de-icing salts. A total of 28 beams were tested, with testing variables including intermittent vs. continuous ECE techniques, different FRP repairing schemes, and applying ECE before and after FRP repair. Parameters monitored during the study included chloride content, pH value around the steel, and current resistance and density. The effectiveness of ECE was determined by changes in chloride levels and the pH value around the steel.