The chloride ion penetration mechanism in basalt fiber reinforced concrete under compression after elevated temperatures
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Wu, S
Qin, Y
Yuan, G
Zhao, Q
Doh, JH
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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.
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Applied Sciences
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11
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21
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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Civil engineering
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Lu, L; Wu, S; Qin, Y; Yuan, G; Zhao, Q; Doh, JH, The chloride ion penetration mechanism in basalt fiber reinforced concrete under compression after elevated temperatures, Applied Sciences, 2021, 11 (21), pp. 10137