封闭配置对CFRP包装混凝土气压缩行为的影响
Riad Babba1, Abdellah Douadi2,3, Eyad Alsuhaibani4
1Faculty of Science and Technology, University of Tamanghasset, Tamanghasset 11001, Algeria.
Materials (Basel, Switzerland)
|August 14, 2025
概括
使用碳纤维增强聚合物 (CFRP) 的不均封闭显著提高了比完全封闭更有效的混凝土强度和柔性. 一个新的模型准确地预测性能,帮助先进的结构设计.
科学领域:
- 材料科学与工程 材料科学与工程
- 结构工程 结构工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 了解对混凝土的封闭效应对于结构应用至关重要.
- 碳纤维增强聚合物 (CFRP) 提供先进的封闭解决方案.
- 优化封闭配置 (完全,部分,不均) 影响材料效率和性能.
研究的目的:
- 为了研究不同CFRP配置的混凝土气的压缩行为.
- 为了比较非均封闭与完全封闭的性能和材料效率.
- 开发和验证CFRP限制混凝土的新预测模型.
主要方法:
- 在不同的CFRP封闭方案下对混凝土瓶 (160mm × 320mm) 的实验测试.
- 第一个阶段:用于直接性能比较的CFRP等价量.
- 第二阶段:减少CFRP材料在不均的限制中以评估效率.
- 使用ANOVA和错误指标 (R2,RMSE) 开发和验证一个新的预测模型.
主要成果:
- 不均的封闭 (NUC) 产生的轴承强度比完全封闭 (FC2) 产生的轴承强度高15%.
- 使用25%少于CFRP的NUC仅显示了~3%的强度降低,证明了优越的材料效率.
- 提出的预测模型实现了高准确性 (R2=0.98应力,R2=0.91应变) 和统计学意义 (p<0.00001).
结论:
- 不均的CFRP封闭为传统方法提供了显著的性能优势和材料效率.
- 开发的预测模型对于实际的工程设计是准确和可靠的.
- 这些发现支持在结构工程中采用先进,高效的封闭策略.
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