Effect of silane coupling agent modified zeolite warm mix additives on properties of asphalt

被引：18
作者：
Han, Xiaobin [1 ]
Cao, Zhilong [1 ]
Wang, Ruiyang [1 ]
He, Peng [1 ]
Zhang, Yichi [1 ]
Yu, Jianying [1 ]
Ge, Yangyang [2 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Wuhan 430070, Peoples R China
[2] Beijing Oriental Yuhong Waterproof Technol Co Ltd, State Key Lab Special Funct Waterproof Mat, Beijing 100123, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 259卷
基金：
中国国家自然科学基金;
关键词：
Zeolite; Silane coupling agent; Warm mix additive; Asphalt; Properties;
D O I：
10.1016/j.conbuildmat.2020.119713
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In order to evaluate the influence of silane coupling agent modified zeolite warm mix additives on the properties of asphalt, the physical and rheological properties as well as chemical structure of asphalt with zeolite, gamma-ammoniapropyltriethoxysilane modified zeolite (KH550-zeolite) and gamma-(2,3-epoxypropoxy)pro pytrimethoxysilane modified zeolite (KH560-zeolite) before and after thin film oven test (TFOT) aging were thoroughly investigated. The results showed that, compared with zeolite, KH550-zeolite and KH560-zeolite made the softening point of asphalt increase more, and whose penetration and ductility decrease less, which indicated that KH550-zeolite and KH560-zeolite (especially KH560-zeolite) could enhance the high-temperature properties and had less effect on the penetration and ductility of asphalt. The temperature susceptibility of asphalt was clearly reduced and the rutting factor (G*/sin delta) was enhanced after the introduction of silane coupling agent modified zeolites compared with zeolite. After the TFOT aging, the performance of asphalt with silane coupling agent modified zeolites (especially KH560-zeolite) had a little change. In a word, KH550-zeolite and KH560-zeolite as warm mix additives had a positive effect on the physical, rheological and anti-aging properties of asphalt. (C) 2020 Elsevier Ltd. All rights reserved.
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页数：10
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