With the recent decreasing of available land, the usage of underground for constructing underground parking lots, subway, underground shopping centers and roads is becoming more frequent than before. Subsequently, due to the changes of the ecosystems and the depletion of ground water in the underground environments are being negatively affected due to coming into contact with corrosive and hazardous substances. In particular, the durability, safety and convenience of the people who reside or utilize these underground structures are reduced by the environmental problems originating from underground ecosystems. Currently there exist a large number of on-going topics of discussion intended to solve the problems, but in order to consolidate a proper and standardized procedure of maintaining waterproofing techniques for these underground structures, a testing method to evaluate the performance of waterproofing and waterleakage resistance in underground structures is necessary.

• 최성민(서울과학기술대학교 건설기술연구소 수석연구원, 공학박사) | Choi, Sung Min
• 김명지(서울과학기술대학교 일반대학원 석사과정) | Kim, Meong Ji
• 오상근(서울과학기술대학교 공과대학 건축학부 교수, 공학박사) | Oh, Sang Keun