单向和双向碳织物增强砂的柔性和伪柔性性能
Samy Yousef1, Regina Kalpokaitė-Dičkuvienė2, Sharath P Subadra1
1Department of Production Engineering, Faculty of Mechanical Engineering and Design, Kaunas University of Technology, LT-51424 Kaunas, Lithuania.
Materials (Basel, Switzerland)
|March 13, 2025
概括
将碳织物 (CFu和CFb) 添加到水泥砂中,可以显著提高曲强度和伪柔性性能. 这项研究表明,碳织物是碳织物的.
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.
- 结构工程 结构工程
背景情况:
- 水泥砂 (CM) 具有脆性行为,限制了其在需要柔性结构中的应用.
- 提高水泥材料的机械性能对于先进的建筑应用至关重要.
研究的目的:
- 研究单向 (CFu) 和双向 (CFb) 碳织物增强对水泥砂的柔性和伪柔性性能的影响.
- 分析不同面料层配置 (单层,双层,三层) 对复合材料行为的影响.
主要方法:
- 碳织物增强水泥砂 (CF/CM) 复合材料的制造.
- 使用光学显微镜进行微结构分析,以评估织物凝聚力和矩阵形态.
- 使用通用测试机器进行柔性性能测试.
- 基于实验性柔性曲线的柔性指数 (DI) 的数值建模.
主要成果:
- 碳面料的引入导致了面料凝聚力的增加,并在水泥砂矩阵中增强了水化产品的形成.
- 双向碳织物 (CFb/CM) 将砂的负载变形反应转变为柔性行为.
- 与整洁砂相比,三层的柔性负载能力提高了高达75% (CFu/CM) 和68% (CFb/CM).
- 变形能力显著增加,增长了452% (CFu/CM) 和367% (CFb/CM).
- 增强后柔性指数 (DI) 提高了高达140%.
结论:
- 碳面料在增强水泥基质的强度和可塑性方面非常有效.
- 这些发现表明,在开发用于结构应用的高性能水泥复合材料中,使用碳织物增强材料有很大的潜力.
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