1. Assistant Professor, Dept. of Civil and Environmental Engineering, Western New England Univ., Springfield, MA 01119; formerly, Research Associate, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706.
2. Professor, Henan Unsaturated Soil and Special Soil Engineering Technology Research Center, College of Architecture and Civil Engineering, Xinyang Normal Univ., Xinyang, Henan 464000, China. ORCID: .
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Wisconsin-Madison, Madison, WI 53706.
4. Professor, Dept. of Civil and Environmental Engineering, Colorado School of Mines, Golden, CO 80401 (corresponding author). ORCID: .