Effect of Fiber-Reinforced Polymer Wraps on Corrosion Activity and Concrete Cracking in Chloride-Contaminated Concrete Cylinders
Publication: Journal of Composites for Construction
Volume 10, Issue 2
Abstract
This paper presents the results of an experimental study designed to investigate the effect of fiber-reinforced polymer (FRP) wraps on corrosion activity and concrete cracking in chloride-contaminated concrete cylinders. Thirty-five concrete cylinders, each having diameter and height, concentrically reinforced with one steel reinforcing bar, were subjected to accelerated corrosion exposure for . Test parameters included level of applied potential, presence of FRP wraps, and bar diameter. The corresponding current and concrete expansion were continuously monitored throughout the corrosion exposure. At the end of the test, the steel bars were extracted, cleaned of rust, and weighed to determine the actual steel mass loss. The results showed that, for the same applied fixed potential, FRP wraps effectively reduced the corresponding current, the concrete expansion, and the steel mass loss. For the same applied potential, the current density increased as the bar diameter decreased. For the same corrosion depth, the circumferential expansion of the cylinder caused by corrosion decreased as the concrete cover-to-bar diameter ratio increased.
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Acknowledgments
This work is supported in part by research funding from the Network of Centers of Excellence ISIS Canada on Intelligent Sensing for Innovative Structures, the Natural Sciences and Engineering Research Council (NSERC), and Sika Canada through donation of CFRP composites. Their contributions are greatly appreciated. The writers wish to thank undergraduate research assistant Saagar Prajapati and graduate student Rania Al-Hammoud for their help throughout the experimental work.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 10 • Issue 2 • April 2006
Pages: 139 - 147
Copyright
© 2006 ASCE.
History
Received: Aug 26, 2004
Accepted: Jun 21, 2005
Published online: Apr 1, 2006
Published in print: Apr 2006
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