Effect of Rejuvenators on Performance and Microstructure of Aged Asphalt

被引：0
|
作者：
况栋梁 [1 ]
余剑英 [2 ]
CHEN Huaxin [1 ]
FENG Zhengang [3 ]
LI Rui [3 ]
YANG Hui [2 ]
机构：
[1] Engineering Research Central of Pavement Materials, Ministry of Education, Chang'an University
[2] State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
[3] School of Highway, Chang'an University
来源：
Journal of Wuhan University of Technology(Materials Science Edition) | 2014年 / 29卷 / 02期
基金：
国家高技术研究发展计划(863计划); 高等学校博士学科点专项科研基金;
关键词：
composite rejuvenator; aged asphalt; rejuvenation; microstructure; physical and rheological properties;
D O I：
暂无
中图分类号：
TQ522.65 [沥青加工];
学科分类号：
0817 ;
摘要：
A composite rejuvenator was used for the rejuvenation of aged asphalt in comparison with the common rejuvenator. The effects of the rejuvenators on the performance and microstructure of the aged asphalt were investigated by physical properties tests, dynamic shear rheometer and atomic force microscopy. The results indicate that the physical and rheological properties of the aged asphalt are restored more significantly by the composite rejuvenator than the common rejuvenator, which can be ascribed to the effective recovery of microstructure of the aged asphalt. The composite rejuvenator has the potential to be used for the rejuvenation of severely aged asphalt since it can restore the colloidal structure of the aged asphalt effectively through composition regulation and chemical reactions between the composite rejuvenator and asphaltenes.
引用
收藏
页码：341 / 345
页数：5
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