回收碳纤维的性能特征及其与水泥矩阵的界面粘合性能
Tao Shi1,2, Kunming Li1, Sijie Shao1
1College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
Materials (Basel, Switzerland)
|April 24, 2025
概括
回收碳纤维显示出水泥的潜力,但其光滑的表面阻碍了粘合. 提高这种接口是提高水泥材料抗拉强度的关键.
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.
- 废物管理 废物管理
背景情况:
- 回收碳纤维 (rCF) 是一种有价值的固体废物,具有高强度但利用率低.
- 将rCF集成到水泥材料中提供了一个高效的回收途径.
- 在高性能应用中,rCF和水泥之间的有效接口粘合是至关重要的.
研究的目的:
- 描述rCF属性并评估其与水泥的界面行为.
- 为了研究界面粘接强度,摩擦和解能量.
- 预测水泥中rCF的桥梁应力,并评估其对材料拉伸性能的影响.
主要方法:
- 单纤维拉出测试以确定接口参数.
- 对rCF表面特性进行表征.
- 用于桥梁应力预测的界面力学理论建模.
- 用rCF加强的水泥材料的拉伸试验.
主要成果:
- 与原始碳纤维相比,rCF与水泥的界面粘合较差,这是由于其光滑的表面和缺乏功能组.
- 测量的界面粘接强度,摩擦和解接能量分别为0.65 MPa,0.47 MPa和0.36 J/m2.
- 预测的桥梁应力范围从1.25 MPa到3.40 MPa,随着rCF体积分数的增加.
- 混凝土材料的拉伸强度增加了8.8%到35.48%的RCF增强.
结论:
- 该研究量化了水泥中rCF的界面特性,突出了粘合方面的挑战.
- 通过桥梁机制,rCF有效地提高了水泥材料的拉伸性能.
- 优化rCF-水泥接口对于最大限度地提高建筑中再生碳纤维的性能好处至关重要.
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