Laboratory evaluation of composed modified asphalt binder and mixture containing nano-silica/rock asphalt/SBS

被引：95

作者：

Cai, Liangcai ^{[1
]}

Shi, Xingang ^{[1
]}

Xue, Jing ^{[2
]}

机构：

[1] Air Force Engn Univ, Xian, Shaanxi, Peoples R China

[2] Air Force Engn Design Res Bur, Beijing, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 172卷

关键词：

Composed modification; Nano-silica; Rock asphalt; SBS; Pavement performance; TEMPERATURE PERFORMANCE; RHEOLOGICAL PROPERTIES; SBS;

D O I：

10.1016/j.conbuildmat.2018.03.187

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

As SBS modified asphalt has the disadvantages of high initial cost, difficult processing and poor storage stability, many researches have been conducted experiments on composed modified asphalt to get a more satisfactory pavement performance. This study proposed an asphalt mixture modified by nanosilica, rock asphalt and SBS. Basic performance tests of asphalt, rutting tests, low-temperature bending tests, moisture susceptibility tests, fatigue tests and durability tests of asphalt mixtures modified by SBS, rock asphalt, nano-silica/rock asphalt and nano-silica/rock asphalt/SBS were performed to evaluate their pavement performance. Comparing these tests results with the properties of unmodified asphalt mixture, nano-silica and rock asphalt cause an improvement in pavement performance. nano-silica/ rock asphalt/SBS modified asphalt mixture had higher temperature stability, low-temperature cracking resistance, moisture susceptibility and durability than 5% SBS modified asphalt except the similar fatigue life. Furthermore, economic analysis indicated that the nano-silica/rock asphalt/SBS modified asphalt mixture had higher cost effectiveness. (C) 2018 Elsevier Ltd. All rights.

引用

页码：204 / 211

页数：8

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