Rheological and aging properties of warm mix asphalt binders containing expanded vermiculite

被引：11
|
作者：
Liu, Jun [1 ]
Yan, Kezhen [1 ]
Zhao, Xiaowen [1 ]
机构：
[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China
来源：
PETROLEUM SCIENCE AND TECHNOLOGY | 2016年 / 34卷 / 11-12期
基金：
中国国家自然科学基金;
关键词：
Aging; binder; expanded vermiculite; high temperature rheology; warm mix asphalt; NANOCOMPOSITE; PERFORMANCE; BITUMEN;
D O I：
10.1080/10916466.2016.1181653
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The scope of this study was to investigate the high and intermediate temperature rheological and aging properties of warm mix asphalt binders modified by organo-expanded vermiculites. The rotational viscosity, complex modulus, and rutting parameter (G*/delta) increased and the penetration and phase angle decreased after modification of 3% organo-expanded vermiculites, indicating that the high temperature rheological properties of the warm mix asphalt binder have been improved. The warm mix asphalt binders containing 3% organo-expanded vermiculites demonstrate the lowest value of phase angle and the highest value of complex modulus compared with the studied binders. In addition, as a result of the rolling thin film oven test, the viscosity aging index of warm mix asphalt binder decreases, while the retained penetration increases obviously with the introduction of organo-expanded vermiculites. The warm mix asphalt binder with 3% organo-expanded vermiculites has more pronounced improvements in aging resistance in comparison with other studied modified warm mix asphalt binders.
引用
收藏
页码：1042 / 1047
页数：6
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