1. Ph.D. Student, School of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.
2. Ph.D. Student, National & Local Joint Engineering Laboratory of Traffic Civil Engineering Materials, Chongqing Jiaotong Univ., Chongqing 400074, China.
3. Professor, School of Material Science and Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China (corresponding author).
4. Professor, School of Civil Engineering, Chongqing Jiaotong Univ., Chongqing 400074, China.