Bond Performance of Basalt Fiber-Reinforced Polymer Bars to Concrete
Publication: Journal of Composites for Construction
Volume 19, Issue 3
Abstract
This paper presents the test results of a study on the bond behavior of basalt fiber-reinforced polymer (BFRP) bars to concrete. Thirty six concrete cylinders reinforced with BFRP bars and twelve cylinders reinforced with glass fiber-reinforced polymer (GFRP) bars were tested in direct pullout conditions. Test parameters included the FRP material (basalt and glass), the bar diameter, and the bar embedment length in concrete. Bond-slip curves of BFRP and GFRP bars revealed similar trends. BFRP bars developed average bond strength 75% of that of GFRP bars. All BFRP specimens failed in a pullout mode of failure along the interfacial surface between the outer layer of the bar and the subsequent core layers. The influence of various parameters on the overall bond performance of BFRP bars is analyzed and discussed. The well-known BPE and modified-BPE analytical models were calibrated to describe the bond-slip relationships of the bars. Test results demonstrate the promise of using the BFRP bars as an alternative to the GFRP bars in reinforcing concrete elements.
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Acknowledgments
The authors would like to thank Magmatech personnel for providing the BFRP bars needed for this study. Thanks are also extended to Pultrall personnel for donating the GFRP bars used in the tests.
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Published In
Journal of Composites for Construction
Volume 19 • Issue 3 • June 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Oct 18, 2013
Accepted: Mar 12, 2014
Published online: Aug 11, 2014
Discussion open until: Jan 11, 2015
Published in print: Jun 1, 2015
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