1. Geotechnical and Structures Laboratory, U.S. Army Engineer Research and Development Center, 3909 Halls Ferry Road, Vicksburg, Mississippi 39180, USA
2. HX5 LLC, Vicksburg, Mississippi 39180, USA
3. Department of Civil and Environmental Engineering, Jackson State University, Jackson, Mississippi 39217, USA
4. School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom