抗氧剂与老化程度对沥青与石灰岩界面黏附性的影响

石油炼制与化工 ›› 2025, Vol. 56 ›› Issue (12): 106-113.

抗氧剂与老化程度对沥青与石灰岩界面黏附性的影响

高颖^1,2,张英豪¹,吕小博¹,李光耀¹,罗辉³

1. 河北工程大学土木工程学院
2. 河北省绿色长寿命路面工程材料技术创新中心
3. 中国石油大学（华东）重质油全国重点实验室

收稿日期:2025-05-30 修回日期:2025-08-22 出版日期:2025-12-12 发布日期:2025-12-02
通讯作者: 吕小博 E-mail:lyuxiaobo@hebeu.edu.cn
基金资助:
河北省自然科学基金

EFFECTS OF ANTIOXIDANTS AND AGING DEGREE ON THE ADHESION OF ASPHALT AND LIMESTONE INTERFACE

Received:2025-05-30 Revised:2025-08-22 Online:2025-12-12 Published:2025-12-02
Supported by:
Natural Science Foundation of Hebei Province

摘要/Abstract

摘要： 为探究抗氧剂和老化程度对沥青与石灰岩界面黏附性的影响机制，通过定量分析老化前后沥青-集料混合料的质量损失率和溶液吸光度，分别考察了不同老化阶段的抗氧剂（Irganox 1010和Irgafos 168）改性沥青与石灰岩集料界面的黏附性；进一步，结合分子动力学模拟，计算了老化前后沥青在集料界面的黏附功和扩散系数变化情况。结果表明：随着老化程度的加深，沥青在集料表面的黏附性逐渐降低、质量损失率不断增大；抗氧剂可以抑制沥青的氧化反应，相同老化阶段的改性沥青与集料的黏附性优于未改性70号沥青；抗氧剂的加入可以明显提高沥青在集料界面的黏附功和扩散性，原因在于抗氧化增强了沥青的极性，改善沥青的流动性，使其能与集料表面的高活性离子反应形成稳定的化学键；改性沥青与集料的黏附性明显优于70号沥青，Irganox 1010改性效果优于Irgafos 168。

关键词: 改性沥青, 抗氧剂, 黏附性能, 分子动力学

Abstract: In order to explore the influence mechanism of antioxidants and aging on the adhesion of asphalt-limestone interface, the adhesion of antioxidants (Irganox 1010 and Irgafos 168) at the interface between asphalt and limestone aggregate at different aging stages was investigated by quantitatively analyzing the mass loss rate and solution absorbance of asphalt-aggregate mixtures before and after aging. Furthermore, combined with molecular dynamics simulation, the changes of adhesion work and diffusion coefficient of asphalt at the aggregate interface before and after aging were calculated. The results show that with the deepening of aging, the adhesion of asphalt on the surface of the aggregate gradually decreases and the mass loss rate increases. Antioxidants can inhibit the oxidation reaction of asphalt, and the adhesion between modified asphalt and aggregate at the same aging stage is better than that of unmodified No.70 asphalt. The addition of antioxidants can significantly improve the adhesion and diffusivity of asphalt at the aggregate interface, because oxidation enhances the polarity of asphalt, improves the fluidity of asphalt, and makes it react with highly active ions on the aggregate surface to form stable chemical bonds. The adhesion between modified asphalt and aggregate was significantly better than that of No.70 asphalt, and the modification effect of Irganox 1010 was better than that of Irgafos 168.

Key words: modified asphalt, antioxidant, adhesion properties, molecular dynamics

高颖张英豪吕小博李光耀罗辉. 抗氧剂与老化程度对沥青与石灰岩界面黏附性的影响[J]. 石油炼制与化工, 2025, 56(12): 106-113.

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