1. Research Civil Engineer, Geotechnical and Structures Laboratory, Engineer Research and Development Center, U.S. Army COE (USACE), 3909 Halls Ferry Rd., Vicksburg, MS 39180 (corresponding author).
2. Associate Professor, Dept. of Civil and Environmental Engineering, Mississippi State Univ., Mississippi State, MS 39762.
3. Research Civil Engineer, Geotechnical and Structures Laboratory, Engineer Research and Development Center, U.S. Army COE (USACE), 3909 Halls Ferry Rd., Vicksburg, MS 39180.
4. Chief, Airfields and Pavements Branch, Geotechnical and Structures Laboratory, Engineer Research and Development Center, U.S. Army COE (USACE), 3909 Halls Ferry Rd., Vicksburg, MS 39180.
5. Research Physical Scientist, Geotechnical and Structures Laboratory, Engineer Research and Development Center, U.S. Army COE (USACE), 3909 Halls Ferry Rd., Vicksburg, MS 39180.