研究CFRP封闭的超高性水泥复合材料的轴向压缩性能
1School of Architecture, Huanggang Polytechnic College, Huanggang, Hubei, China.
PloS one
|September 25, 2025
概括
用碳纤维增强聚合物 (CFRP) 制成的超高性水泥复合材料 (UHTCC) 显示出改进的机械性能. 钢纤维UHTCC实现了84.6MPa的压力强度,而PVA和PE纤维显著提高了最终应变.
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.
- 结构工程 结构工程
背景情况:
- 超高性水泥复合材料 (UHTCC) 提供增强的柔性.
- 碳纤维增强聚合物 (CFRP) 封闭是一种有前途的技术,可以改善混凝土的性能.
- 了解受限UHTCC的机械行为对于结构应用至关重要.
研究的目的:
- 调查与CFRP限制的UHTCC的轴压力机械性能.
- 分析不同纤维类型 (钢,PVA,PE) 和CFRP层对UHTCC性能的影响.
- 评估现有应力-应变模型对CFRP限制的UHTCC的适用性.
主要方法:
- 用各种纤维类型制备UHTCC.
- 使用CFRP封闭层的应用.
- 轴压缩负载故障测试. 轴压缩负载故障测试.
- 应力-张力曲线和故障模式的分析.
- 与现有的应力-应变模型进行比较.
主要成果:
- 钢纤维UHTCC表现出显著改善的压力强度 (84.6 MPa与27.6 MPa无限制).
- PVA和PE纤维显著增加了最终应变 (分别增加了107.6%和243.2%).
- 萨马姆模型显示,对于CFRP限制的UHTCC,与实验结果的偏差不到10%.
结论:
- CFRP的限制有效地提高了UHTCC的轴向压缩性能.
- 纤维类型在确定故障机制和机械性能方面发挥着关键作用.
- 萨马姆模型是一个可行的工具,用于预测CFRP受限UHTCC的应力-应变行为.
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