1. Applications Engineering Manager, Louisiana Transportation Research Center, Baton Rouge, LA 70808.
2. Research Associate IV, Louisiana Transportation Research Center, Louisiana State Univ., Baton Rouge, LA 70808.
3. Associate Professor, Dept. of Construction Management, Louisiana State Univ., Baton Rouge, LA 70803-6419.
4. Irma Louise Rush Stewart Distinguished Professor, Dept. of Civil and Environmental Engineering, Louisiana Transportation Research Center, Louisiana State Univ., Baton Rouge, LA 70808 (corresponding author).
5. LTRC Materials Research Administrator, 4101 Gourrier Ave., Baton Rouge, LA 70808.