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Article

The Chloride Ion Penetration Mechanism in Basalt Fiber Reinforced Concrete under Compression after Elevated Temperatures

1
Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining & Technology, Xuzhou 221116, China
2
Jiangsu Collaborative Innovation Center for Building Energy Saving and Construction Technology, Xuzhou 221116, China
3
School of Mechanics and Civil Engineering, China University of Mining & Technology, Xuzhou 221116, China
4
Department of Civil Engineering, Harbin Institute of Technology, Harbin 264209, China
5
School of Engineering and Built Environment, Griffith University, Southport, QLD 4222, Australia
*
Author to whom correspondence should be addressed.
Appl. Sci. 2021, 11(21), 10137; https://doi.org/10.3390/app112110137
Submission received: 23 September 2021 / Revised: 21 October 2021 / Accepted: 25 October 2021 / Published: 29 October 2021
(This article belongs to the Special Issue New Challenges in Civil Structure for Fire Response)

Abstract

Chloride ion penetration frequently leads to steel corrosion and reduces the durability of reinforced concrete. Although previous studies have investigated the chloride ion permeability of some fiber concrete, the chloride ion permeability of the basalt fiber reinforced concrete (BFRC) has not been widely investigated. Considering that BFRC may be subjected to various exposure environments, this paper focused on exploring the chloride ion permeability of BFRC under the coupling effect of elevated temperatures and compression. Results demonstrated that the chloride ion content in concrete increased linearly with temperature. After exposure to different elevated temperatures, the chloride ion content in BFRC varied greatly with increasing stress. The compressive stress ratio threshold for the chloride ion penetration was measured. A calculation model of BFRC chloride ion diffusion coefficient under the coupling effect of elevated temperatures and mechanical damage (loading test) was proposed.
Keywords: basalt fiber reinforced concrete (BFRC); elevated temperature; compression experiment; chloride ion penetration basalt fiber reinforced concrete (BFRC); elevated temperature; compression experiment; chloride ion penetration

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MDPI and ACS Style

Lu, L.; Wu, S.; Qin, Y.; Yuan, G.; Zhao, Q.; Doh, J.-H. The Chloride Ion Penetration Mechanism in Basalt Fiber Reinforced Concrete under Compression after Elevated Temperatures. Appl. Sci. 2021, 11, 10137. https://doi.org/10.3390/app112110137

AMA Style

Lu L, Wu S, Qin Y, Yuan G, Zhao Q, Doh J-H. The Chloride Ion Penetration Mechanism in Basalt Fiber Reinforced Concrete under Compression after Elevated Temperatures. Applied Sciences. 2021; 11(21):10137. https://doi.org/10.3390/app112110137

Chicago/Turabian Style

Lu, Limin, Shaohua Wu, Yuwen Qin, Guanglin Yuan, Qingli Zhao, and Jeung-Hwan Doh. 2021. "The Chloride Ion Penetration Mechanism in Basalt Fiber Reinforced Concrete under Compression after Elevated Temperatures" Applied Sciences 11, no. 21: 10137. https://doi.org/10.3390/app112110137

APA Style

Lu, L., Wu, S., Qin, Y., Yuan, G., Zhao, Q., & Doh, J.-H. (2021). The Chloride Ion Penetration Mechanism in Basalt Fiber Reinforced Concrete under Compression after Elevated Temperatures. Applied Sciences, 11(21), 10137. https://doi.org/10.3390/app112110137

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