1. Principal Researcher, Geotechnical Research Division, Highway & Transportation Technology Institute, Korea Highway Corporation, San 50-5, Dongtan-Myeon, Hwaseong City, Kyonggi-do 445-812, South Korea. E-mail: ssj3@freeway.co.kr
2. Thomas R. Briggs Professor of Engineering, School of Civil & Environmental Engineering, 273 Hollister Hall, Cornell Univ., Ithaca, NY 14853. E-mail: tdo1@cornell.edu
3. Professor, Fiber Science Program, Dept. of Textiles and Apparel, Cornell Univ., MVR Hall, Ithaca, NY 14853. E-mail: ann2@cornell.edu