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JMT 2013, Vol. 21 Issue (4) :273-280    DOI: 10.1007/s40534-013-0023-x
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Optimization of technical measures for improving high-temperature performance of asphalt-rubber mixture
Chuan Xiao1, Tianqing Ling2, Yanjun Qiu1*
1. School of Civil Engineering, Southwest Jiaotong University, P. O. Box 520, No. 111 First North Section, 2nd Ring Road, Chengdu 610031, Sichuan, China;
2. School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, China

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Abstract Asphalt-rubber pavements often become damaged in high-temperature regions and appear rutted or wavy, and experience slippage. To improve the high-temperature performance of the asphalt-rubber mixture, technical measurements, such as, the optimal adjustment of gradation, technique of composite modification, and control of compaction were investigated. An optimal adjustment of aggregate gradation based on stone matrix asphalt improves the high-temperature stability of the asphalt- rubber mixture significantly. Through composite modification, the effect of asphalt-rubber modification was enhanced, and the dynamic stability and relative deformation indices of the asphalt-rubber mixture were improved significantly. Furthermore, compaction parameters had a significant influence on the high-temperature stability of the asphalt-rubber mixture. The rolling times for compacting the asphalt-rubber mixture should be controlled to within 18-20 round-trips at a molding temperature at 180℃; if the rolling time is a 12 round-trip, the compaction temperature of the asphalt-rubber mixture should be controlled between 180 and 190℃.
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Chuan Xiao
Tianqing Ling
Yanjun Qiu
KeywordsRoad engineering   Optimization   Laboratory test   Asphalt-rubber mixture   High-temperature performance     
Received 2013-07-01;

This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.

Corresponding Authors: Chuan Xiao, e-mail: xcaaa6666@sina.com     Email: xcaaa6666@sina.com
Cite this article:   
Chuan Xiao, Tianqing Ling, Yanjun Qiu.Optimization of technical measures for improving high-temperature performance of asphalt-rubber mixture[J]  JMT, 2013,V21(4): 273-280
http://jmt.swjtu.edu.cn/EN/10.1007/s40534-013-0023-x      or     http://jmt.swjtu.edu.cn/EN/Y2013/V21/I4/273
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