1. School of Environment and Municipal Engineering, Lanzhou Jiaotong University, 88 Anningxi Road, Anning District, Lanzhou City, Gansu Province 730070, China
2. School of Civil Engineering, Lanzhou University of Technology, 287 Langongping Road, Qilihe District, Lanzhou City, Gansu Province 730050, China
3. Gansu Road Construction Group Management Co., Ltd., 213 Jiuquan Road, Chengguan District, Lanzhou City, Gansu Province 730030, China