1. Associate Professor, School of Materials Science and Engineering, Chang’an Univ., No. 161 Chang’an Middle Rd., Xi’an 710061, P.R. China.
2. Research Scientist, Hebei Research Institute of Construction and Geotechnical Investigation Co. Ltd., Shijiazhuang 050031, China; Research Scientist, Technology Center of Geotechnical Engineering of Hebei Province, Shijiazhuang 050031, China.
3. Professor, School of Materials Science and Engineering, Chang’an Univ., No. 161 Chang’an Middle Rd., Xi’an 710061, P.R. China (corresponding author).