1. Assistant Professor, Western Transportation Institute and Dept. of Civil Engineering, College of Engineering, 2327 University way #6, Montana State Univ., Bozeman, MT 59717-4250.
2. Associate Professor, Laboratory of Advanced and Sustainable Cementitious Materials, Dept. of Civil and Environmental Engineering, Washington State Univ., Sloan 101, P.O. Box 642910, Pullman, WA 99164-2910 (corresponding author).
3. #150, Xuefu Rd., Yunnan Institute of Building Research, Kunming 650223, China.
4. Western Transportation Institute and Dept. of Civil Engineering, College of Engineering, Montana State Univ., P.O. Box 174250, Bozeman, MT 59717-4250.