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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
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ISSN : 2233-8292

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Vol.19 No.6
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유도배수공법에서 동결융해의 영향

Effect of freezing and thawing on the drainage system for leakage treatment

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2017, v.19 no.6, pp.1059-1075
https://doi.org/10.9711/KTAJ.2017.19.6.1059
김동규 (한국건설기술연구원)
임민진 (한국건설기술연구원 지반연구소)
김동규, & 임민진. (2017). 유도배수공법에서 동결융해의 영향. (사)한국터널지하공간학회, 19(6), 1059-1075, https://doi.org/10.9711/KTAJ.2017.19.6.1059
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Abstract

The objective of this study was to evaluate the freezing and thawing resistance of the existing drainage system for leakage treatment of underground concrete structures operating in cold regions. The freezing and thawing test was conducted on 4 types of drainage system specimens to evaluate the freezing and thawing resistance of the drainage system. The freezing and thawing resistance was evaluated on 4 types of Hotty-gel, as a waterproofing material, connection methods and on two methods to fix the drainage board with Hotty-gel on the surface of cement concrete specimen. One cycle of the freeze-thaw testing was 48 hours (24 hours of freezing and 24 hours of thawing), and the temperatures of freezing and thawing were at -18°C and 10°C, respectively. Among the 4 types of Hotty-gel connection methods, leakage occurred after 28 cycles (8 weeks) of freeze-thawing only in the Hotty-gel connection method with the ‘V’ groove applied to the corner of the drainage board. No leakage occurred in the 3 types of Hotty-gel connection methods. In two fixing methods, leakage occurred in the method of fixing the drainage board on the cement concrete specimen using the washer, screw and plastic wall plug. Leakage occurred at one point after 10 cycles (3 weeks) of freezing and thawing. After 28 cycles (8 weeks) of freezing and thawing, leakage point increased to 5 points. As time passed, the leak point was not increased, but the amount of leakage was increased at each leak point. The Hotty-gel connection method with cross-sectional diagonal shape was evaluated to be the highest in the production efficiency considering the production time and manufacturing method of the Hotty-gel connection shape. In the construction efficiency considering the construction time and construction method, the fixing method of air nailer, fixed nail and washer was superior to that of the washer, screw and plastic wall plug.

keywords
지하 콘크리트 구조물, 누수, 배수, 동결융해, 방수재료, Underground structure, Leakage, drainage, Freezing and thawing, Waterproofing material

참고문헌

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