关于GFRP树脂螺栓耐久性和结合性能的实验研究
Mingan Lin1, Fuming Zhang2, Wei Wang3
1School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China.
Materials (Basel, Switzerland)
|June 27, 2024
概括
玻璃纤维增强聚合物 (GFRP) 螺栓在海水中表现出优异的耐用性和与混凝土的高粘合强度. 这些非金属完全利用了它们的抗拉强度,在海洋工程应用中被证明是可靠的.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 腐蚀工程 腐蚀工程
背景情况:
- 与钢相比,玻璃纤维增强聚合物 (GFRP) 螺栓具有更高的抗拉强度,更轻的重量和耐腐蚀性.
- 它们在保护工程中的应用,特别是在海洋环境中,至关重要,但研究不足.
- 对GFRP螺栓缺乏标准化的拉出测试,这阻碍了结构设计.
研究的目的:
- 在模拟的海水条件下调查GFRP anchor系统的耐用性和粘合性能.
- 建立用于混凝土中GFRP螺栓的可靠的拔出测试方法.
- 评估GFRP螺栓在海洋和沿海保护工程中的适用性.
主要方法:
- 使用人工海水对GFRP棒和环氧树脂进行耐久性实验.
- 在各种压力强度 (21.2,40.8,61.3MPa) 的混凝土块中嵌入的GFRP螺栓上进行拉出测试.
- 室内拉出测试使用钢管填充环氧树脂,以确定关键长.
主要成果:
- GFRP棒和环氧树脂在人造海水中强度变化不到5%.
- 拉出测试确定了一个关键的长.
- 混凝土中的GFRP螺栓经常因杆骨折而失败,这表明高粘合强度和GFRP拉伸能力的充分利用.
结论:
- 在海洋环境中,GFRP anchor系统具有出色的耐用性和粘合性能.
- 杆系统有效地利用了GFRP杆的高拉伸强度.
- GFRP树脂螺栓是腐蚀性海洋服务环境的安全可靠选择,对结构设计和未来研究有价值.
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