1. Research Civil Engineer, U.S. Army Engineer Research and Development Center, CEERD-GMA, 3909 Halls Ferry Rd., Vicksburg, MS 39180; formerly, Ph.D. Student, Dept. of Civil and Environmental Engineering, Mississippi State Univ., Starkville, MS 39762.
2. Associate Professor, Materials and Construction Industries Chair, Dept. of Civil and Environmental Engineering, Mississippi State Univ., 501 Hardy Rd., P.O. Box 9546, Starkville, MS 39762 (corresponding author).
3. Engineer, Research Division, Mississippi Dept. of Transportation, 401 North West St., P.O. Box 1850, Jackson, MS 39201.