Lecturer, School of Civil Engineering, Central South University, Changsha, China, 410072
Dept. of Transportation Engineering, National University of Defense Technology, Changsha, China, 410072. E-mail:
[Qisen Zhang] Professor, School of Transportation Engineering, Changsha University of Science and Technology, Changsha, China, 410004. E-mail:
[Sheng Zhao] Graduate Student, Civil & Environmental Engineering, University of Tennessee, Knoxville, Tennessee, USA 37996. E-mail:
语种：
英文
年：
2014
页码：
117 - 125
会议论文集名称：
Climatic Effects on Pavement and Geotechnical Infrastructure<&wdkj&>Climatic Effects on Pavement and Geotechnical Infrastructure<&wdkj&>Climatic Effects on Pavement and Geotechnical Infrastructure
The use of thin asphalt overlay is an effective way in preserving and maintaining the road surface. In this study, the virgin asphalt was mixed up with Superflex modifier at varied concentrations to get the modified asphalt overlay, and the optimum modifier content was 15% by weight of the total mix. Aggregate gradation of the overlay was acquired by means of volume method, and the optimal asphalt content was obtained through Marshall mix design. The performance of the modified overlay mixture evaluated in the laboratory included high-temperature stability, moisture susceptibility and skid res...
