Bond Property between Rebars and Basalt Fiber–Reinforced Concrete after Exposure to High Temperatures
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 10
Abstract
Pullout tests were performed on ordinary concrete (OC) specimens and basalt fiber–reinforced concrete (BFRC) specimens after exposure to high temperatures (20°C, 100°C, 300°C, 500°C, and 700°C). The effect of temperature on the bond property between rebars and concrete was studied. The measured data indicated that temperature below 300°C generates little damage to the bond performance for both OC and BFRC, while a temperature exceeding 500°C leads to sharp deterioration, which is similar to the changing pattern of concrete strength. The deterioration degree of bond strength and bond stiffness of BFRC specimens after exposure to high temperatures is lower than that of OC, while the deformation ability is better. In the end, a practical bond strength–slip constitutive model was established, taking account of the temperature in coefficients.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research is supported by the National Natural Science Foundation of China (NSFC:51808544 and NSFC:51972337). The authors gratefully appreciate the support.
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 10 • October 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Oct 20, 2022
Accepted: Mar 6, 2023
Published online: Jul 19, 2023
Published in print: Oct 1, 2023
Discussion open until: Dec 19, 2023
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