INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Research on Durability of Glass Fiber Textile Reinforced Seawater Sea-sand Concrete Exposed to Simulated Marine Environment |
YU Song, HU Xiang*, ZHAO Yifan, ZHU Deju, SHI Caijun
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Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha 410082, China |
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Abstract In this work, the flexural behavior of glass fibertextile reinforced seawater sea-sand concrete (GTR-SWSSC) exposed to the simulated marine environment was studied. Four-point bending tests were carried out on GTR-SWSSC after different drying-wetting cycles and seawater immersion time, and the flexural performance of GTR-SWSSC was evaluated. At the same time, the improvement effect of epoxy resin on the resistance of GTR-SWSSC to seawater was investigated and analyzed from the microscopical level by scanning electron microscope (SEM). The results show that the bending properties of GTR-SWSSC conform to a certain regularity, and the exposure to seawater leads to the damage of the internal structure of the specimen, which makes the bending strength decrease. In general, the bending strength of the GTR-SWSSC exhibits a relatively slow decline trend in the harsh marine environment. Surface treatment with epoxy resin can effectively improve the bending strength and delay the decline of the mechanical properties of GTR-SWSSC, but the delaying effect is gradually weakened with the increase of the age after a certain period of time.
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Published: 10 May 2022
Online: 2022-05-09
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Fund:National Key R & D Program of China (2018YFC0705400) and National Natural Science Foundation of China (U1806225,51638008). |
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