1. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, P. R. China
2. The Key Laboratory of Road Construction Technology and Equipment, MOE, Chang’an University, Xi’an 710064, P. R. China
3. Shaanxi Kekong Technology Industry Research Institute Co. Ltd., Shaanxi Science and Technology Holding Group, Xi’an 710000, P. R. China
4. College of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, P. R. China