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材料导报  2022, Vol. 36 Issue (9): 21020151-9    https://doi.org/10.11896/cldb.21020151
  无机非金属及其复合材料 |
玻璃纤维织物增强海水海砂混凝土在模拟海洋环境中的耐久性研究
喻松, 胡翔*, 赵一帆, 朱德举, 史才军
湖南大学土木工程学院,绿色先进土木工程材料及应用技术湖南省重点实验室,长沙 410082
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
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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摘要 本工作研究了玻璃纤维织物增强海水海砂混凝土(GTR-SWSSC)复合材料于海水浸泡和干湿循环条件下的弯曲性能。在不同干湿循环次数和海水浸泡时间下对玻璃纤维增强混凝土(GTR-SWSSC)进行了四点弯曲试验,对复合材料在模拟海洋服役环境下的抗弯性能进行了评估。同时,探究了环氧树脂对复合材料抗海水腐蚀性能的改善作用,并通过电镜扫描从微观层面对海水浸泡时间、干湿循环次数和环氧树脂涂层的作用进行了分析。研究结果表明GTR-SWSSC的弯曲性能变化符合一定的规律,海水干湿循环和浸泡环境导致了试件内部结构的损伤,使得试件强度有所下降。总体而言,复合材料在海水恶劣环境下的强度呈现较为缓慢的下降趋势,采用环氧树脂进行表面处理能有效提高试件的弯曲强度,延缓试件力学性能的衰退,但是延缓效果在一定时间后随龄期延长逐渐减弱。
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喻松
胡翔
赵一帆
朱德举
史才军
关键词:  海水海砂混凝土  耐碱玻璃纤维  水下区  潮汐区  海水浸泡  干湿循环  弯曲性能  耐久性    
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.
Key words:  seawater sea-sand concrete    alkali resistant glass fiber    underwater zone    tidal zone    seawater immersion    wetting and drying cycle    bending performance    durability
出版日期:  2022-05-10      发布日期:  2022-05-09
ZTFLH:  TU528  
基金资助: 国家重点研发计划项目(2018YFC0705400);国家自然科学基金(U1806225;51638008)
通讯作者:  xianghu@hnu.edu.cn   
作者简介:  喻松,2017年6月毕业于贵州大学,获工学学士学位。现为湖南大学土木工程学院硕士研究生,在史才军教授的指导下进行研究,主要从事织物增强海水海砂混凝土力学性能与耐久性能的研究。
胡翔,湖南大学土木工程学院副教授。本科与硕士就读于湖南大学土木工程学院结构工程专业,博士毕业于比利时根特大学土木与结构工程专业。已发表学术论文30余篇,出版英文著作一部,研究方向为水泥基材料耐久性测试与表征、水泥混凝土氯离子传输、氯离子结合和钢筋锈蚀。
引用本文:    
喻松, 胡翔, 赵一帆, 朱德举, 史才军. 玻璃纤维织物增强海水海砂混凝土在模拟海洋环境中的耐久性研究[J]. 材料导报, 2022, 36(9): 21020151-9.
YU Song, HU Xiang, ZHAO Yifan, ZHU Deju, SHI Caijun. Research on Durability of Glass Fiber Textile Reinforced Seawater Sea-sand Concrete Exposed to Simulated Marine Environment. Materials Reports, 2022, 36(9): 21020151-9.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.21020151  或          http://www.mater-rep.com/CN/Y2022/V36/I9/21020151
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