All Issue

2018 Vol.17, Issue 4 Preview Page

Research Article

Numerical Study on Direct Shear Test of Composite Shotcrete with Sprayable Waterproofing Membrane

차수용 박층 멤브레인의 직접전단실험에 관한 수치해석 연구

Kicheol Lee1
,
Soon-Wook Choi2
,
Dongwook Kim3
,
Chulho Lee4*
이 기철1
,
최 순욱2
,
김 동욱3
,
이 철호4*
1Member, Graduate Student, Department of Civil and Environmental Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
2Nonmember, Senior Researcher, Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283, Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
3Member, Associate Professor, Department of Civil and Environmental Engineering, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
4Member, Senior Researcher, Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology, 283, Goyang-daero, Ilsanseo-gu, Goyang-si, Gyeonggi-do 10223, Republic of Korea
* Corresponding Author
30 December 2018. pp. 189-197
PDF XML Citation
Abstract

A sprayable waterproofing membrane which has relatively high adhesive property onto concrete enables faster construction with better waterproof performance compared with a conventional sheet membrane. However, the sprayable waterproofing membrane is a recently developed material and its performance and behavior with structures are not sufficiently reported. Therefore, in this study, the shear behavior of sprayable waterproofing membrane was numerically analyzed using the results of previous studies of composite shotcrete with sprayable waterproofing membrane. From the previous study, shear behavior of shotcrete with sprayable waterproofing membrane was different from shotcrete case and there was a limitation to express the behavior of the interface in general shear strength method. Therefore, in this study, the direct shear test was numerically simulated using two contact models, and then the best suitable method to express the shear behavior of the sprayable waterproofing membrane was suggested.

Keywords
Sprayable waterproofing membrane
Contact
Shear strength
Interface
Numerical analysis

차수용 박층 멤브레인은 폴리머로 구성된 재료로 기존 방수포(sheet membrane)와 비교했을 때, 시공에 있어서 뿜어 붙이는 방식을 사용하기 때문에 타설이 용이하고 상대적으로 높은 부착성능을 보이는 재료이다. 하지만, 차수용 박층 멤브레인은 최근에 개발된 재료로 그 성능이나 구조물과의 거동 양상은 충분히 보고되지 못한 실정이다. 따라서 본 연구에서는 차수용 박층 멤브레인이 삽입된 복합 숏크리트 재료에 대해 전단시험을 수행한 기존 연구 결과를 이용하여 차수용 박층 멤브레인의 전단거동을 수치해석적으로 접근하여 접촉면 특성을 파악하고자 하였다. 연구를 통해 숏크리트 사이에 시공된 멤브레인에 의해 숏크리트의 전단거동과는 다른 거동을 보여 일반적으로 사용되는 전단강도 방식으로 거동을 표현하는데에는 한계가 있었다. 이에 따라 수치해석 방법을 사용하여 직접 전단시험을 모사하였고 차수용 박층 멤브레인의 전단거동을 가장 효과적으로 표현할 수 있는 방안을 제시하였다.

References
1
ASTM D638 (2010), Standard Test Method for Tensile Properties of Plastics, ASTM International, West Conshohocken, PA.
2
EFNARC (2008), Specification and Guidelines on Thin Spray-on Liners for Mining and Tunneling, European Federation of National Associations Representing for Concrete.
3
Holter, K. G. (2015), Properties of Waterproof Sprayed Concrete Linings, Ph.D. Thesis, Norwegian University of Science and Technology.
4
Johnson, R. P., Swallow, F. E. and Psomas, S. (2016), “Structural properties and durability of a sprayed waterproofing membrane for tunnels”, Tunnelling and Underground Space Technology, Vol.60, pp.41-48.
10.1016/j.tust.2016.07.013
5
Kim, Y, S. (2014), Modeling Contact with Abaqus/Standard, V-Eng., Next Printing. (in Korean)
6
Lee, K., Kim, D., Chang, S. H., Choi, S. W. and Lee, C. (2017), “Analysis of Reinforcement Effect of TSL (Thin Spray-on Liner) as Supports of Tunnel by Numerical Analysis,” Journal of Korean Geosynthetics Society, Vol.16, No.4, pp.151-161. (in Korean)
7
Nakashima, M., Hammer, A. L., Thewes, M., Elshafie, M. and Soga, K. (2015), “Mechanical behavior of a sprayed concrete lining isolated by a sprayed waterproofing membrane”, Tunneling and Underground Space Technology, Vol.47, pp.143-152.
10.1016/j.tust.2015.01.004
8
Park, P., Lee, C., Choi, S. W., Kang, T. H., Kim, J., Choi, M. S., Jeon, S. and Chang, S. H. (2018), “Interfacial properties of composite shotcrete containing sprayed waterproofing membrane”, Geomechanics and Engineering, Vol.16, online published version.
9
SIMULIA (2014), 6.14 Documentation Collection., ABAQUS/ CAE User's Manual.
10
Su, J. and Bloodworth, A. (2016), “Interface parameters of composite sprayed concrete linings in soft ground with spray-applied waterproofing”, Tunnelling and Underground Space Technology, Vol.59, pp.170-182.
10.1016/j.tust.2016.07.006
11
Tannant, D. D. (2001), “Thin Spray-on Liners for Underground Rock Support”, Proceedings of the 17th International Mining Congress and Exhibition of Turkey-IMCET 2001, pp.57-73.
12
Verani, C. A. and Aldrian, W. (2010), Composite linings: ground support and waterproofing through the use of a fully bonded membrane, Shotcrete: Element of a System, Taylor & Francis, London.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 17
  • No :4
  • Pages :189-197
  • Received Date : 2018-10-28
  • Revised Date : 2018-12-06
  • Accepted Date : 2018-12-10
  • DOI :https://doi.org/10.12814/jkgss.2018.17.4.189
Journal Informaiton Journal of the Korean Geosynthetics Society Journal of the Korean Geosynthetics Society
  • NRF
  • KOFST
  • KISTI Current Status
  • KISTI Cited-by
  • crosscheck
  • orcid
  • open access
  • ccl
Journal Informaiton Journal Informaiton - close