一项关于废旧轮胎金属纤维对青混合物的性能特性影响的实验研究
Arsalaan Khan Yousafzai1,2, Muslich Hartadi Sutanto2, Nasir Khan2
1Department of Civil Engineering, Faculty of Civil, Agricultural & Mining Engineering, University of Engineering & Technology Peshawar, Peshawar 25120, Pakistan.
Materials (Basel, Switzerland)
|March 14, 2026
概括
将废旧轮胎金属纤维 (WTMF) 回收成热混合青 (HMA) 可以提高道路性能. 最佳的WTMF含量可以提高耐湿性和刚性,为轮胎废弃物提供可持续的解决方案.
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.
- 环境科学 环境科学
背景情况:
- 废轮胎的处置带来了环境挑战,推动了对可持续,高价值回收的需求.
- 将废旧轮胎金属纤维 (WTMF) 纳入热混合青 (HMA) 是作为一种改善青性能和减少垃圾填埋负担的方法.
研究的目的:
- 研究WTMF对HMA机械性能的影响.
- 确定WTMF的最佳剂量,以提高HMA的性能.
- 评估WTMF作为废轮胎的可持续回收解决方案.
主要方法:
- 准备了WTMF修饰的HMA混合物,其WTMF含量各不相同 (0-1.50%).
- 使用马歇尔测试,间接拉伸强度 (ITS),拉伸强度比 (TSR),刚度模量和疲劳寿命分析来评估机械性能.
- 进行了微观分析,以了解纤维-矩阵相互作用.
主要成果:
- 随着WTMF的添加,马歇尔稳定性下降,流量增加,而最佳粘合剂含量略有增加.
- 经WTMF修改的HMA表现出更好的耐湿性 (TSR>80%),在0.75%WTMF的峰值改善.
- 刚度模块显著增加,特别是在高温下,0.375%的WTMF显示了最高的模块.
- 适度WTMF含量改善了疲劳寿命,但过量导致永久变形增加.
结论:
- 控制添加WTMF (0.375%至0.75%) 可以提高HMA的关键性能指标,包括耐湿性和刚性.
- 作为一种有价值的回收材料,WTMF显示出提高青路面耐用性的潜力.
- 这项研究为土木工程应用中废旧轮胎的可持续回收提供了一个可行的途径.
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