1. Doctoral Student, School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China.
2. Professor, School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China (corresponding author).
3. Professor, School of Material Science and Engineering, Chang’an Univ., Xi’an, Shaanxi 710064, China.
4. Lecturer, School of Highway, Chang’an Univ., Xi’an, Shaanxi 710064, China.