1. Graduate Research Assistant, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, Rolla, MO 65409.
2. Professor, Dept. of Civil, Architectural and Environmental Engineering, Missouri Univ. of Science and Technology, Rolla, MO 65409 (corresponding author).
3. Statewide Pavement Engineer, Alaska Dept. of Transportation and Public Facilities, 5800 E. Tudor Rd., Anchorage, AK 99507.