Long-Term Electrochemical Behavior of Low-Alloy Steel in Simulated Concrete Pore Solution with Chlorides
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 4
Abstract
The passivation capability and long-term chloride-induced corrosion behavior of a low-cost low-alloy (LA) steel and the conventional low-carbon (LC) steel in a simulated concrete pore solution (SCPS) were investigated using various electrochemical techniques and microstructural characterization methods. The results show that the passivation capability of LA steel is slightly higher than LC steel. However, after long-term exposure to SCPS with chlorides, the corrosion resistance of LA steel is superior to LC steel. It is proposed that the high corrosion resistance of LA steel is mainly achieved by the formation of a compact and adherent rust layer on the steel surface.
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Acknowledgments
The authors greatly acknowledge the support by the National Natural Science Foundation of China (Nos. 51461135001 and 51678144), the National Basic Research Program of China “973 Project” (No. 2015CB655100), the Natural Science Foundation of Jiangsu Province (No. BK20161420) and Industry-University Research Cooperative Innovation Fund of Jiangsu Province (No. BY2013091).
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©2018 American Society of Civil Engineers.
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Received: May 15, 2017
Accepted: Sep 7, 2017
Published online: Jan 30, 2018
Published in print: Apr 1, 2018
Discussion open until: Jun 30, 2018
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