基岩纤维增强聚合物条的组合修改对抗性的影响
Andrzej Garbacz1, Maria Włodarczyk1, Grzegorz Banasiak1
1Faculty of Civil Engineering, Warsaw University of Technology, Al. Armii Ludowej 16, 00-637 Warsaw, Poland.
Polymers
|March 14, 2026
概括
这项研究测试了基岩纤维增强聚合物 (BFRP) 条的抗性,发现混合修改提高了性能. 然而,在BFRP条上添加纳米,降低了它们在性环境中的抗拉强度.
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.
- 聚合物科学 聚合物科学
背景情况:
- 纤维增强聚合物 (FRP) 为混凝土结构提供非金属增强材料.
- 岩纤维增强聚合物 (BFRP) 条具有低弹性模量,限制了它们的应用.
- 诸如与碳纤维 (HFRP) 杂交和添加纳米二氧化 (nHFRP) 等修改旨在提高机械性能和耐热性.
研究的目的:
- 为了评估BFRP条和修改版 (HFRP和nHFRP) 的抗性.
- 为了研究以碳纤维和纳米二氧化添加基岩纤维的部分替代对抗性的影响.
- 为评估FRP棒的抗性提出一个不太耗时和成本效益的测试设置.
主要方法:
- 根据ACI 440.3R-04程序 (A,B,C) 在60°C下对BFRP,HFRP和nHFRP条进行抗性测试.
- 在性溶液中浸泡样本,有或没有施加负荷,持续6个月.
- 检查质量和抗拉强度的变化;建议和评估一个新的测试设置,以保持恒定应变维护.
主要成果:
- 与BFRP相比,HFRP在性环境中只显示拉伸强度降低了5% (程序A).
- 在类似条件下,nHFRP的抗拉强度比BFRP下降了40%以上.
- 在环境温度下提出的测试设置 (程序B) 显示出有希望的结果,在6个月后,拉伸强度仅下降了10-14%.
结论:
- 与碳纤维 (HFRP) 的混合增强了与BFRP相比的抗性.
- 将纳米二氧化纳入环氧粘合剂 (nHFRP) 有负面影响的抗和抗拉强度的稳定性.
- 拟议的测试方法大大减少了FRP条的抗性评估的时间和成本,突出了温度的关键作用.
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