研究各种纤维增强青粘合剂的粘性弹性特性
Yunyu Li1, Fan Xu2, Yongsheng Wang3
1School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China.
Materials (Basel, Switzerland)
|March 13, 2024
概括
纤维增强的青粘合剂显示出更好的高温性能和耐用性. 聚烯和素纤维分别提高了对变形的抵抗力和温度的敏感性,而聚纤维具有优越的弹性特性.
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.
- 聚合物科学 聚合物科学
背景情况:
- 青粘合剂在路面施工中至关重要.
- 提高青粘合剂的性能是改善道路耐用性的关键.
- 纤维增强为修改青粘合剂性能提供了一个有希望的方法.
研究的目的:
- 研究用素纤维 (LFs),聚纤维 (PFs) 和聚烯纤维 (PPFs) 增强的青结合物的粘性弹性特性.
- 评估纤维增强对青粘合剂动态模量和相角的影响.
- 使用时间-温度等效原理 (TTSP) 建立放松模量和爬行合规性的总体曲线.
主要方法:
- 动态切割风湿学 (DSR) 测试是在改性青结合剂上进行的.
- 在不同温度下收集动态模量和相角的数据.
- 应用了通用的麦克斯韦尔 (GM) 模型来适应测试曲线并预测粘合剂特性.
主要成果:
- 纤维增强的青粘合剂表现出对高温和长期变形的增强抵抗力.
- 增强降低了温度灵敏度,增加了弹性特征.
- 聚烯纤维 (PPF) 提高了高温性能,素纤维 (LF) 提高了长期耐用性,聚纤维 (PF) 显示出了特殊的高温弹性特性.
- 一个13个元素的GM模型被发现是最适合数据的.
结论:
- 纤维增强显著改善了青粘合剂的粘弹性行为.
- 特定的纤维为不同的性能要求提供了明显的优势.
- 这些发现为设计耐用和高性能青路面提供了宝贵的见解.
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