Effects of Corrosion of Steel Reinforcement on RC Columns Wrapped with FRP Sheets
Publication: Journal of Performance of Constructed Facilities
Volume 23, Issue 1
Abstract
This study investigated the effectiveness of carbon fiber-reinforced polymer (CFRP) sheets in protecting reinforced concrete (RC) columns from corrosion of steel reinforcement. Thirty small-scale RC columns and four midscale RC columns were used in this study. The small-scale columns were used for a comprehensive parametric study, whereas the midscale columns were used to evaluate design guidelines proposed based on the results of the small-scale column tests. The test columns were conditioned under an accelerated corrosion process and then tested under uniaxial compression up to failure. The test results showed that although CFRP sheet wrapping decreased the corrosion rate, the corrosion of steel reinforcement could continue to occur, eventually showing a decrease in ultimate axial compression capacity. Design guidelines were proposed based on the small-scale RC column tests and evaluated through a comparison with the test results of midscale RC columns. The proposed design guidelines introduced a concept of effective area to account for the corrosion damage, such as internal cracking and cross-sectional loss of steel reinforcement.
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Acknowledgments
This research was funded by the Missouri Department of Transportation and National University Transportation Center at the Missouri University of Science and Technology. Their financial support is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 23 • Issue 1 • February 2009
Pages: 20 - 31
Copyright
© 2009 ASCE.
History
Received: Jun 21, 2007
Accepted: Mar 31, 2008
Published online: Feb 1, 2009
Published in print: Feb 2009
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