带有无形合金纤维的超高性能混凝土的机械性能:通过Silane合剂KH-550进行表面修饰
Dawei Wang1, Runqing Liu1, Song Wang1
1School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China.
Materials (Basel, Switzerland)
|August 29, 2024
概括
使用西兰合剂KH-550对无形合金纤维的表面修改增强了它们与水泥的结合. 这提高了超高性能混凝土的机械性能,使其更强大,更耐用.
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.
- 纳米技术纳米技术
背景情况:
- 无形合金纤维比钢纤维具有更高的抗拉强度和耐腐蚀性.
- 无形合金纤维与水泥矩阵之间的界面粘合不良,需要进行表面修改.
研究的目的:
- 为了研究西兰合剂KH-550表面修饰对无形合金纤维的影响.
- 评估改性纤维对超高性能混凝土 (UHPC) 机械性能的影响.
主要方法:
- 使用15%度的西兰合剂KH-550溶液对无形合金纤维的表面修改.
- 测试修改纤维和水泥矩阵之间的界面键强度和粗度.
- 用修改纤维的UHPC的压力强度,屈曲强度,拉力强度和峰值应力的评估.
主要成果:
- 改性无形合金纤维的界面粘结强度为3.29 MPa,粗度为3.85.
- 使用修改纤维的超高压显示压力强度 (133.6 MPa),屈曲强度 (25.5 MPa),拉伸强度 (8.32 MPa) 和峰值应力 (114.26 MPa) 的增加.
- 与未经修改纤维的UHPC相比,机械性能提高了2.9%至10.9%.
结论:
- 西兰合剂KH-550有效地修改无形合金纤维表面,增强与水泥的界面粘合.
- 表面修改显著提高了超高性能混凝土的机械性能.
- 优化纤维矩阵相互作用对于提升先进的水泥复合材料的性能至关重要.
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