Integrated High-Performance Concrete Beams Reinforced with Hybrid BFRP and Steel Bars
Publication: Journal of Structural Engineering
Volume 148, Issue 1
Abstract
The flexural behavior of concrete beams reinforced with a combination of basalt fiber–reinforced polymer (BFRP) bars and steel bars is investigated herein. Five hybrid BFRP and steel bar RC beams, one pure BFRP-RC beam, and one pure steel-RC beam, were designed based on the principle of equal stiffness and subject to four-point bending tests. The main study parameters included the bar type, ratio of the steel reinforcement area to the BFRP reinforcement area (), and BFRP bar diameter. The results of the four-point bending tests showed that the hybrid-RC beams had a lower ultimate load and larger ultimate deflection with the increase in . The tested beams had similar stiffnesses before yielding; the five hybrid-RC beams exhibited an obvious postyielding stiffness as well, which contributes to a higher reserve in both strength and deformability. Comparisons between the experimental values and predicted values of ultimate capacity, deflection, and crack width using design models are also presented herein.
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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 gratefully acknowledge the financial support provided by the National Natural Science Foundation of China (51878149).
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Information
Published In
Journal of Structural Engineering
Volume 148 • Issue 1 • January 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Oct 20, 2020
Accepted: Aug 9, 2021
Published online: Oct 21, 2021
Published in print: Jan 1, 2022
Discussion open until: Mar 21, 2022
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