在普通波特兰水泥和硫酸水泥复合材料上的玻璃纤维的修改机制

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Jiaxin Li¹, Tingquan Shao¹, Haoyan Guo^1,2

¹School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China.

Materials (Basel, Switzerland)

|May 7, 2025

概括

将玻璃纤维 (GF) 添加到普通波特兰水泥和硫酸水泥 (OPC-SAC) 复合材料中,可以显著提高机械和粘合强度,同时减少裂纹. 通过0.5%的GF观察到最佳性能,改善了快速修复材料的应用.

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.
建筑材料建筑材料

背景情况:

普通的波特兰水泥和硫酸水泥 (OPC-SAC) 复合材料有裂纹,脆性和粘合强度差,限制了它们在快速修复中的使用.
提高OPC-SAC复合材料的性能对于开发有效的快速修复材料至关重要.

研究的目的:

为了研究将玻璃纤维 (GF) 纳入OPC-SAC复合材料的影响.
为了优化GF含量,改善机械,粘合和干燥收缩性能.

主要方法:

玻璃纤维 (GFs) 被添加到OPC-SAC复合材料中的不同百分比 (0.0-1.5%).
评估的属性包括流动性,机械强度,结合强度和干燥收缩.
使用扫描电子显微镜 (SEM) 和基于图像的计算断层扫描 (ICT) 分析了微观结构.
使用X射线衍射 (XRD) 和富里埃变换红外光谱 (FTIR) 研究了水化产品.

主要成果:

压缩纤维改善了机械性能,0.5%的压缩纤维产生了28天的最大屈曲强度 (+22.1%),压缩强度 (+12.1%) 和结合强度 (+82.9%).
GFs显著抑制了干燥收缩,随着GF含量增加,效果会增加.
0.5%的GFs降低了多孔性,减少了大孔的体积 (>10毫米3),并完善了整体毛孔结构.

结论:

加入玻璃纤维是一种有效的策略,可以提高OPC-SAC复合材料的性能.
0.5%的玻璃纤维含量被认为是改善机械性能,结合强度和减少干燥收缩的最佳.
这些发现支持使用GF增强的OPC-SAC复合材料作为先进的快速修复材料.

关键词:

干燥收缩性能干燥收缩性能玻璃纤维玻璃纤维的使用机械性能机械性能机械性能通常的波特兰水泥和硫酸水泥复合材料.孔隙结构孔隙结构

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