Bond Performance of Steel Bar in RAC under Salt-Frost and Repeated Loading
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 9
Abstract
The pullout tests are performed to investigate the bond performance of steel bar in recycled coarse aggregate concrete (RAC) under salt-frost (S-F) and repeated loading, and compared with the bond performance of steel bar in RAC under S-F and monotonic loading by the authors. The results show that the ultimate bond strength for repeated loading decreased after S-F cycles, and the ultimate bond strength for repeated loading is lower than that for monotonic loading after the same S-F cycles. The peak slip for repeated loading increased after S-F cycles, and the peak slip of the specimens for repeated loading is higher than that for monotonic loading after S-F cycles. The ultimate bond strength prediction equation of steel bar in RAC under S-F and repeated loading is presented. The S-F cycle causes the bond stress to move toward the free end, and the repeated loading accelerates the transfer of bond stress to the free end.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the submitted article.
Acknowledgments
The study was carried out with the support of the National Key R&D Program for 13th Five-year of China (No. 2018 YFD1101001).
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 9 • September 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 13, 2019
Accepted: Feb 6, 2020
Published online: Jun 30, 2020
Published in print: Sep 1, 2020
Discussion open until: Nov 30, 2020
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