In this study, in order to enhance the quality of concrete dam it is mentioned that the influenced factors which effect on the water leak and methodology for weak zone repair and retrofit before filling water of concrete dam.

• 장봉석(K-water K-water연구원 책임연구원, 공학박사) | Jang, Bong Seok 교신저자
• 오병현(K-water K-water연구원 수석연구원, 공학박사) | Oh, Byung Hyun