[1
]Research Assistant, National Engineering Laboratory of Highway Maintenance Technology,
Changsha Univ. of Science and Technology, Hunan 410004, PR China.
[2
]Professor, National Engineering Laboratory of Highway Maintenance Technology, Changsha
Univ. of Science and Technology, Hunan 410004, PR China (corresponding author).
[3
]Professor, National Engineering Laboratory of Highway Maintenance Technology, Changsha
Univ. of Science and Technology, Hunan 410004, PR China.
[4
]Associate Professor, National and Regional Engineering Lab for Transportation Construction
Materials, College of Civil Engineering, Chongqing Jiaotong Univ., 66 Xuefu Ave.,
Nanan Qu, Chongqing 400074, China.