用于可持续路面的HDPE-贝克利特双修饰青混合物的性能评估
Muhammad Yasir1, Naqeeb Ullah Khattak2, Inamullah Khan1
1National Institute of Transportation (NIT), National University of Sciences & Technology (NUST), NUST Campus, Risalpur 24080, Pakistan.
Polymers
|November 27, 2025
概括
这项研究使用回收的高密度聚乙烯 (HDPE) 和贝克利特增强了适用于炎热气候的青. 最佳的混合物显著提高了路面的强度,防潮性,并减少了,提供了一个可持续的解决方案.
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:
- 灵活的路面面临着困境,如在炎热的气候下和潮湿损害.
- 巴基斯坦等地区的极端温度 (>45°C) 加剧了路面的退化.
- 传统的青结合剂需要增强,以提高耐用性.
研究的目的:
- 为了研究双重修饰物的协同效应:高密度聚乙烯 (HDPE) 和贝克利特.
- 提高青混合物,以提高极端炎热气候中的性能.
- 评估使用废物材料的可持续性和成本效益.
主要方法:
- 青混合物使用湿工艺进行了修改,其中包含不同百分比的HDPE (3%,6%,9%) 和固定6%的贝克利特.
- 使用间接抗拉强度 (ITS),抗拉强度比 (TSR),弹性模块和汉堡轮跟踪测试来评估性能.
- 修改后的混合物与使用常规青和NHA Class-B分级的对照混合物进行了比较.
主要成果:
- 最佳的6%HDPE + 6%贝克利特配方显示出显著的改进:24.7%更高的干燥ITS,48.7%更高的条件ITS,95.36%TSR,43.7%更高的弹性模块和27.4%更低的深.
- 这些增强归因于由HDPE和Bakelite组成的更硬的聚合物树脂网络.
- 较高的HDPE含量 (9%) 显示了潜在的相隔冲击强度,但继续改善了抗.
结论:
- 用HDPE和Bakelite进行双重修改提供了一种可持续且具有成本效益的方法,以提高在炎热气候下路面的耐用性.
- 这种方法通过利用回收材料来解决废物管理的挑战.
- 改进的性能特征表明,有潜力降低维护成本和延长柔性路面的使用寿命.
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