1. Senior Researcher, Structure and Geotechnical Research Division, Expressway and Transportation Research Institute, Korea Expressway Corporation, Hwaseong City, Gyung Gi Province 445-812, Korea. E-mail: msnam@ex.co.kr
2. Chairman and Professor, Director of Center for Innovative Grouting Materials and Technology (CIGMAT), Director of Texas Hurricane Center for Innovative Technology, Dept. of Civil and Environmental Engineering, Univ. of Houston, Houston, TX 77204-4003. E-mail: cvipulanandan@uh.edu