1. Graduate Research Assistant, Dept. of Civil and Environmental Engineering, Louisiana State Univ., 4101 Gourrier Ave., Baton Rouge, LA 70808.
2. Research Associate, Louisiana Transportation Research Center, Louisiana State Univ., 4101 Gourrier Ave., Baton Rouge, LA 70808 (corresponding author).
3. Irma Louise Rush Stewart Distinguished Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
4. Materials Research Administrator, Louisiana Transportation and Research Center, 4101 Gourrier Ave., Baton Rouge, LA 70808.
5. Director, Louisiana Transportation and Research Center, 4101 Gourrier Ave., Baton Rouge, LA 70808.