在不同老化条件下对聚合物和纳米材料改性的性能进行评估
Shaban Ismael Albrka Ali1,2, Khalifa Salem Gallouz3, Ikenna D Uwanuakwa4,5
1Department of Civil and Construction Engineering, College of Engineering, A'Sharqiyah University, Ibra 400, Oman.
Nanomaterials (Basel, Switzerland)
|July 25, 2025
概括
添加聚合物和纳米材料,如纳米二氧化和纳米粘土显著提高了青的性能,提高了对永久变形和低温裂纹的抗性,从而延长了路面的使用寿命.
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:
- 对于路面的耐用性来说,青的性能至关重要.
- 老化和高交通负载降低了青的性能.
- 需要先进的修饰剂来增强青的特性.
研究的目的:
- 评估使用纳米二氧化 (NSA),纳米粘土 (NCY) 和烯烯烯酸 (ASA) 修改的青的修形学和机械性能.
- 评估老化对改性的性能的影响.
- 确定这些修饰剂在提高对永久变形和低温裂纹的抗性方面的有效性.
主要方法:
- 用5%的NSA,NCY和ASA制备青混合物.
- 短期和长期的衰老模拟.
- 使用动态剪切风力计 (DSR) 和曲束风力计 (BBR) 的风学和机械测试,包括频率扫描,MSCR和BBR测试.
主要成果:
- 所有改性样品的性能都超过了纯.
- 修改后的石表现出更高的复杂模量 (G*) 和更低的相角 (δ),表明了更好的粘弹性特性.
- NCY5%显示爬行刚度有51.5%的改善,而NSA5%显示m值有28.5%的改善.
- 修改后的青显示出更好的恢复,降低了衰老的脆弱性,增强了对永久变形和低温裂纹的抵抗力.
结论:
- 加入5%的NSA,NCY或ASA显著改善了青的气质和机械性能.
- 改性石表现出对永久变形和老化效应的优越抵抗力.
- 这些材料提供了一种可行的解决方案,可以在各种条件下提高路面的性能,延长使用寿命.
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