Influence of additives on the water stability of asphalt mixture in salty and humid environment

被引：0

作者：

Zhang, Zhengqi ^{[1
]}

Zhang, Ke ^{[1
]}

机构：

[1] Key Laboratory of Highway Engineering in Special Region of Ministry of Education, Chang'an University, Xi'an

来源：

Gongneng Cailiao/Journal of Functional Materials | 2015年 / 46卷 / 21期

关键词：

Additives; Asphalt mixture; Road engineering; Salty and humid environment; Water stability;

D O I：

10.3969/j.issn.1001-9731.2015.21.027

中图分类号：

学科分类号：

摘要：

The basalt fiber, polyester fiber, lignin fiber, AMR, TJ-066 and hydrated lime were selected to produce asphalt mixtures and the specimens were shaped. Dry-wet cycles of specimens in 10% NaCl solution were carried out to speed up the erosion of salty and humid environment, and then the Immersion Marshall Test, freeze-thaw splitting test, dynamic water scouring and splitting test and Hamburg wheel tracking test in water were carried out. The test results show that the residual stability, freeze-thaw splitting strength ratio and scouring and splitting strength ratio of asphalt mixture all increase at certain degrees after mixed six kings of additives. Different additives can increase the failure number, delay the appearance of spalling phenomenon and reduce the spalling rate of asphalt mixture. The effect of basalt fiber in improving the water stability of asphalt mixture is best, followed by hydrated lime, and the effect of two anti-stripping agents is relatively poor. The basalt fiber is recommended to improve the water damage resistance of asphalt mixture in salty and humid area. © 2015, Journal of Functional Materials. All right reserved.

引用

页码：21128 / 21132

页数：4

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