LM-S沥青改性剂提高沥青混合料黏附性能的分子模拟计算及路用性能考察

doi:10.16085/j.issn.1000-6613.2017-2430

化工进展 ›› 2018, Vol. 37 ›› Issue (10): 3949-3957.DOI: 10.16085/j.issn.1000-6613.2017-2430

LM-S沥青改性剂提高沥青混合料黏附性能的分子模拟计算及路用性能考察

方伟锋¹, 沈本贤¹, 仝玉军¹, 于小桥², 倪腾亚², 孙辉¹

1 华东理工大学化工学院, 上海 200237;
2 北京紫瑞天成科技有限公司, 北京 100020

收稿日期:2017-11-24 修回日期:2018-01-22 出版日期:2018-10-05 发布日期:2018-10-05
通讯作者: 沈本贤,教授,博士生导师,研究方向为石油沥青产品和工艺技术研究开发。
作者简介:方伟锋(1992-),男,硕士研究生,研究方向为石油沥青产品和工艺技术研究开发。

Molecular simulation of LM-S asphalt modifier to improve the adhesion of asphalt mixture and investigation of road performance

FANG Weifeng¹, SHEN Benxian¹, TONG Yujun¹, YU Xiaoqiao², NI Tengya², SUN Hui¹

1 Research Institute of Petroleum Processing, East China University of Science and Technology, Shanghai 200237, China;
2 Beijing ZiRuiTianCheng Technology Co., Ltd., Beijing 100020, China

Received:2017-11-24 Revised:2018-01-22 Online:2018-10-05 Published:2018-10-05

摘要/Abstract

摘要： 沥青与石料的黏附性大小直接影响沥青混合料的强度、稳定性、耐久性等性质。通过分子模拟计算的方法研究沥青与石料的黏附作用，计算比较沥青改性前后与石料间的黏附功，并与水煮法沥青黏附性实验结果及沥青混合料微观形貌研究结果进行比对；同时考察沥青改性剂LM-S对沥青混合料路用性能的改进效果。结果表明，采用LM-S改性后的沥青-石料体系的界面黏附功比基质沥青-石料体系提高了近26%，因而具有更好的黏附性；沥青混合料实验结果亦表明LM-S改性剂可显著提高基质沥青和SBS改性沥青混合料的高温稳定性能、低温稳定性能及水稳定性性能，其中动稳定度分别提高了162%和43%。

关键词: 分子模拟, 沥青改性剂, 黏附性, 沥青混合料, 路用性能

Abstract: The adhesion of asphalt and aggregate directly affects the strength, stability and durability of asphalt mixture. In this paper, the adhesion between asphalt and aggregate was studied using the molecular simulation. The adhesion work between asphalt and aggregate before and after modifications was calculated and compared with the test results of the asphalt adhesion test and the microscopic morphology of the asphalt mixture. Meanwhile, the effect of the asphalt modifier LM-S on asphalt mixture pavement performance was investigated. The results showed that the interfacial adhesion work of the LM-S modified asphalt-aggregate system was approximately 26% higher than that of the matrix asphalt-aggregate system. The test results of asphalt mixture also showed that the LM-S could significantly improve the high temperature stability performance, low temperature stability performance and water stability performance of matrix asphalt and SBS modified asphalt mixture. The dynamic stability of the matrix asphalt and SBS modified asphalt mixture were increased by 162% and 43%, respectively.

Key words: molecular simulation, asphalt modifier, adhesion, asphalt mixture, road performance

中图分类号:

TU535

方伟锋, 沈本贤, 仝玉军, 于小桥, 倪腾亚, 孙辉. LM-S沥青改性剂提高沥青混合料黏附性能的分子模拟计算及路用性能考察[J]. 化工进展, 2018, 37(10): 3949-3957.

FANG Weifeng, SHEN Benxian, TONG Yujun, YU Xiaoqiao, NI Tengya, SUN Hui. Molecular simulation of LM-S asphalt modifier to improve the adhesion of asphalt mixture and investigation of road performance[J]. Chemical Industry and Engineering Progress, 2018, 37(10): 3949-3957.

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LM-S沥青改性剂提高沥青混合料黏附性能的分子模拟计算及路用性能考察

Molecular simulation of LM-S asphalt modifier to improve the adhesion of asphalt mixture and investigation of road performance

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