考利尼特和石Na+对制粘合剂存储稳定性的影响
Shyaamkrishnan Vigneswaran1, Jihyeon Yun1, Moon-Sup Lee2
1Department of Engineering Technology, Texas State University, San Marcos, TX 78666, USA.
Materials (Basel, Switzerland)
|June 10, 2023
概括
考利尼特和蒙特莫里隆尼特纳米粘土增强了化粘合剂的储存稳定性. 考利尼特修饰的结合剂显示出优越的抗和恢复能力,这表明整体性能有所改善.
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:
- 化粘合剂用于提高青路面的性能.
- 存储稳定性对于修改结合剂的有效应用至关重要.
- 纳米粘土添加剂提供了增强粘合剂性能的潜力.
研究的目的:
- 评估考利尼特和蒙莫里隆尼特纳米粘土对化结合剂的储存稳定性的影响.
- 评估修改结合剂的性能特征和相分离.
- 为了确定最佳的纳米粘土修饰剂,以提高粘合剂性能.
主要方法:
- 采用了两步修改过程,将原始粘合剂PG 64-22与碎修改器 (CRM) 结合起来.
- 用于初始修改,使用高速湿混合,然后添加高酸盐和蒙莫里隆酸盐纳米粘土.
- 进行了超级铺路和多重剪切爬行恢复 (MSCR) 测试,以评估性能和分离指数.
主要成果:
- 考林石和蒙莫里隆石都提高了结合剂粘度和性能等级.
- 在高温下,蒙莫里隆石的粘度高于考林石.
- 在MSCR测试中,高酸改性化粘合剂表现出优越的抗性和更高的回收率.
- 纳米粘土减少了青和富含的阶段之间的相分离.
结论:
- 考利尼特和蒙莫里隆尼特纳米粘土增强了化粘合剂的储存稳定性和性能.
- 考利尼特修饰的化粘合剂提供优越的耐磨性和更好的回收,即使在更高的负载周期.
- 虽然这两种纳米粘土都减少了相位分离,但高石通常会导致更高的整体粘合剂性能.
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