1. Graduate Research Assistant, School of Materials Science, Southeast Univ., Nanjing 211189, China, and Graduate Research Assistant, School of Civil Engineering, Purdue Univ., West Lafayette, IN.
2. Assistant Professor, Dept. of Civil, Construction, and Environmental Engineering, North Carolina State Univ., Campus Box 7908, 431C Mann Hall, Raleigh, NC 27695; formerly, Graduate Research Assistant, School of Civil Engineering, Purdue Univ., West Lafayette, IN.
3. Assistant Professor, School of Engineering, Pontificia Universidad Catolica de Chile, Casilla 306, Correo 22, Santiago, Chile.
4. Professor, Director of Pankow Materials Laboratory, Purdue Univ., West Lafayette, IN (corresponding author).