Influence of moisture on the migration of asphalt components and the adhesion between asphalt binder and aggregate

被引：18
|
作者：
Cong, Peiliang [1 ]
Chen, Zhihui
Ge, Wanshuai
机构：
[1] Changan Univ, Sch Mat Sci & Engn, Xian 710064, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 385卷
关键词：
Moisture damage; Interface failure; Asphalt-aggregate system; Asphalt components; Adhesion; INTERFACE; PERFORMANCE; PROPERTY; FRACTURE;
D O I：
10.1016/j.conbuildmat.2023.131513
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The performance degradation of asphalt pavement by moisture intrusion has been widely concerned. This paper investigated the effect of moisture on asphalt fractions and interface failure mechanism by moisture-induced using inclined shear test. Fourier transform infrared spectroscopy (FTIR) showed reduction of asphalt aromaticity by moisture led to the decline of asphalt cohesion. Fluorescence microscopy (FM) images indicated humid environment aggravated degradation of polymer particles in modified asphalt. Failure surface analysis confirmed moisture damage extended from asphalt to asphalt-aggregate interface. Although moisture enhanced the polarity of asphalt, moisture intrusion into the interface seriously weakened adhesion capability of asphalt and aggregate.
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收藏
页数：16
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