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Article

Effect of Seawater Environment on the Structure and Performance of Basalt Continuous Fiber

by 1,2, 1,2 and 1,2,*
1
State Key Laboratory of Modification of Fiber Materials, Shanghai 201620, China
2
Engineering Center of Advanced Glass Manufacturing Technology, Ministry of Education, Donghua University, Shanghai 201620, China
*
Author to whom correspondence should be addressed.
Academic Editor: F. Pacheco Torgal
Materials 2021, 14(8), 1862; https://doi.org/10.3390/ma14081862
Received: 11 March 2021 / Revised: 29 March 2021 / Accepted: 7 April 2021 / Published: 9 April 2021
(This article belongs to the Section Construction and Building Materials)
Basalt continuous fibers (BFs) have been widely applied in the construction industry including marine applications, however, the corrosion mechanism of BFs in a seawater environment is still not well understood. In this work, we explored the effect of the seawater environment on the weight loss, tensile strength, surface morphology, and microstructure structure of BFs via soaking the BFs in seawater solutions at different temperatures and durations. Results show that the weight loss ratio of BFs decreases at the first stage (around 18 h) of soaking at 80 °C, 85 °C, and 90 °C and then increases for longer soaking durations, while the tensile strength has the opposite change. This enhancement of tensile strength and chemical resistance (at the first stage of seawater soaking) is dominated by the ion-exchange induced ‘blunting’ mechanism, even though the results from a Fourier transform infrared (FT-IR) spectrometer and energy-dispersive spectroscopy (EDS) revealed the damaging of the Si–O–Si tetrahedral structure during the corrosion process. This work revealed the full corrosion process and corresponding mechanism of BFs in a seawater environment. View Full-Text
Keywords: basalt fiber; seawater environment; chemical durability; tensile strength; microcrack blunting basalt fiber; seawater environment; chemical durability; tensile strength; microcrack blunting
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MDPI and ACS Style

Wang, Q.; Yan, T.; Ding, L. Effect of Seawater Environment on the Structure and Performance of Basalt Continuous Fiber. Materials 2021, 14, 1862. https://doi.org/10.3390/ma14081862

AMA Style

Wang Q, Yan T, Ding L. Effect of Seawater Environment on the Structure and Performance of Basalt Continuous Fiber. Materials. 2021; 14(8):1862. https://doi.org/10.3390/ma14081862

Chicago/Turabian Style

Wang, Qingwei, Tan Yan, and Linfeng Ding. 2021. "Effect of Seawater Environment on the Structure and Performance of Basalt Continuous Fiber" Materials 14, no. 8: 1862. https://doi.org/10.3390/ma14081862

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