He was born in Korea and graduated from Chungbuk National University in Korea. He obtained his M.S. degree from the University of Colorado at Boulder, USA in 1987 and a Ph.D degree from the Southern Illinois University at Carbondale, USA in 1994. Since graduation, he has been teaching geotechnical engineering at the Incheon National University, Korea, where he obtained a full professorship in 2005 and has served as dean of the Urban Science Collage until 2016. He is a Director of Creative Educational Program for Future City Design which is supported by the Ministry of Education in Korea. Now, he is a Vice President of ISSMGE for Asia(2017-2021). He has published 5 books on the geotechnical, geo-environmental and civil engineering related subjects as well as more than 100 journal papers and 150 conference papers. He participated in several geotechnical and geosynthetics touring lectures organized by the ISSMGE and the International Geosynthetic Society in many countries.