Effect of Tension Strain Level on Reinforcement Corrosion
Publication: Journal of Materials in Civil Engineering
Volume 30, Issue 3
Abstract
Reinforcement corrosion is a general problem about the reliability and durability of concrete structures. A lot of research about the issue of reinforcement corrosion has been done; however, it has focused primarily on reinforcement under zero strain. To discuss how tension strain affects reinforcement corrosion, a salt spray test was conducted on reinforcement specimens. The degree of corrosion in reinforcement and the mechanical properties of the tested reinforcement were obtained. The strength of reinforcement decreased with the degree of corrosion, and the decrease of elongation was more significant. Strain level had a nonnegligible influence on the degree of corrosion. The reinforcement corroded more when it was kept under a higher tension strain. During the same corrosion period, the corrosion degree in a specimen under a tension strain of was 1.22 times that of an unstrained specimen. The coefficient representing the effect of strain on corrosion was defined. It was also found that the influence of tension strain on mechanical properties of tested reinforcement is irregular.
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Acknowledgments
The experiment and study are financially supported by China National 973 Plan No. 2013CB036303.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 30 • Issue 3 • March 2018
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 30, 2016
Accepted: Aug 17, 2017
Published online: Dec 29, 2017
Published in print: Mar 1, 2018
Discussion open until: May 29, 2018
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