1. Professor, School of Civil Engineering and Transportation, Beijing Univ. of Civil Engineering and Architecture, Beijing Urban Transportation Infrastructure Engineering Technology Research Center, Beijing 100044, China.
2. Research Associate, Dept. of Civil and Environment Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931; School of Traffic and Transportation, Changsha Univ. of Science and Technology, Changsha, Hunan 410114, China (corresponding author).
3. Research Associate, Research Institute of Highway Ministry of Transport, Beijing 100088, China.
4. Associate Director, Road Engineering Research Center, Research Institute of Highway Ministry of Transport, Beijing 100088, China.
5. Professor, Dept. of Civil and Environment Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931.
6. Assistant Engineer, China Offshore Bitumen Co. Ltd., Binzhou 256600, China.