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用两种典型轻油混合改性青混合物的性能评估:芳香油和高油之间的比较研究
Qiangbin Zhu1, Youxin Jiang1, Dongdong Ge2,3
1Gansu Province Transportation Planning Survey & Design Institute Co., Ltd., Lanzhou 730030, China.
Materials (Basel, Switzerland)
|February 13, 2026
概括
这项研究表明,将像塔尔油这样的轻油添加到粉碎的改性青中,可以提高路面性能. 高油为可持续的道路建设提供了卓越的好处.
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:
- 回收废对于循环经济和环境保护至关重要.
- 青中的高粉碎含量会增加粘度,降低可加工性.
- 轻油可能会提高改性的性能.
研究的目的:
- 为了评估粉碎改性青混合物与芳香油和高油的性能.
- 评估轻油对高温稳定性,湿度敏感性,低温裂纹,拉伸强度和疲劳寿命的影响.
- 为了确定塔尔油作为可持续路面应用的修饰剂的有效性.
主要方法:
- 青混合物是用20%的碎和5%的轻油 (芳香或高油) 制备的.
- 性能测试包括马歇尔稳定性,轮跟踪,浸泡马歇尔,融分裂,半圆形曲 (SCB),分裂测试和疲劳测试.
- 在不同温度 (60°C,25°C,15°C) 进行了评估.
主要成果:
- 经过改性混合物显示性能显著改善.
- 总变形减少了44.7% (芳香油) 和64.1% (塔尔油).
- 断裂性和抗拉强度大幅增加,高油显示出优异的结果 (分别增加71.9%和63.6%).
- 与低应力比率的芳香油混合物相比,高油混合物的疲劳寿命长47.9%.
- 塔尔油的优越性能与增强的膨胀和交联网络形成有关.
结论:
- 轻油修饰,特别是高油修饰,有效地缓解了碎改性青中的粘度问题.
- 高油改性青混合物表现出增强的高温性能,耐湿性,低温破裂性,抗拉强度和疲劳寿命.
- 这些发现支持使用高油改性青作为道路路面的可持续和高性能解决方案.
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