1. School of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha, People’s Republic of China
2. State Engineering Laboratory of Highway Maintenance Technology, Changsha University of Science & Technology, Changsha, People’s Republic of China
3. School of Civil Engineering, Central South University, Changsha, People’s Republic of China
4. Xinlian College of Henan Normal University, Zhengzhou, People’s Republic of China