Experimental Study of the Effect of Preloading on the Eccentric Compression Behavior of Corroding Reinforced Concrete Columns
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 3
Abstract
Steel corrosion is an important factor in the durability loss of reinforced concrete members. Many studies have examined reinforced concrete eccentric compression members in natural stress-free states and have drawn conclusions about durability from these data. To study the influence of different stress levels on the corrosion and eccentric compression performance of reinforced concrete columns, this study applied an accelerated corrosion test to reinforced concrete specimens with different preloading levels and then conducted eccentric compression axial force capacity tests and analyses. The results showed that for an ordinary reinforcement stirrup member, an increase in the level of preloading reduced the mass loss of the reinforcing bars, and there was a corresponding decrease in the loss of eccentric compression capacity and stiffness. For members with an epoxy-coated reinforcement stirrup, an increase in the preloading level increased the mass loss of the reinforcing bar, and the ultimate axial force capacity of the member under eccentric compression was reduced accordingly.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors thank the National 973 Program (Grant No. 2013CB036303) for its financial support of this experiment and the Railway Engineering Laboratory of the College of Transportation Engineering of Tongji University for its strong support.
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 3 • March 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Aug 30, 2019
Accepted: Jun 30, 2020
Published online: Jan 6, 2021
Published in print: Mar 1, 2021
Discussion open until: Jun 6, 2021
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