1. Ph.D. Candidate, Dept. of Civil Engineering, Univ. of Nebraska–Lincoln, Lincoln, NE 68583-0856.
2. Professor, Dept. of Civil Engineering, 362N Whittier Research Center, Univ. of Nebraska–Lincoln, Lincoln, NE 68583-0856 (corresponding author).
3. Research Professor, Dept. of Chemistry, Univ. of Nebraska–Lincoln, Lincoln, NE 68588-0304.
4. Research Assistant, Dept. of Chemistry, Univ. of Nebraska–Lincoln, Lincoln, NE 68588-0304.
5. Assistant Professor, Dept. of Mining and Metallurgical Engineering, Amirkabir Univ. of Technology, 424 Hafez Ave., Tehran 1591634311, Iran.