An Experimental Verification on the Efficiency of Geosynthetics on Crushed Stone Layer

Min-Cheol Park; Eun-Sang Im; Jae-Hong Kim; Heui-Soo Han

doi:10.7843/kgs.2013.29.11.17

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2013 Vol.29, Issue 11 Preview Page Next Page

An Experimental Verification on the Efficiency of Geosynthetics on Crushed Stone Layer 쇄석배수층에 적용된 토목섬유의 효율성에 대한 실험적 검증

30 November 2013. pp. 17-27

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Abstract

This study is to prove the efficiency of geo-synthetics on the crushed stone layer by experiments. The strength of PET mat as reinforcing soft ground was verified through the loading experiments. Also, PP mat was used to protect the blockage of crushed stone layer by the filled soil, whose efficiency was examined according to loading and infiltration conditions. The crushed stones were penetrated into clay layer if the PET mat was removed, which was verified by loading experiments. In addition, the cohesioness of soil without PP mat made the blockage of stone layer easily, which reduced the infiltration capacity by about 98%.

Keywords

Horizontal drain

PET mat

PP mat

Geosynthetics

Blockage

본 연구의 목적은 쇄석배수층에 설치된 토목섬유의 효율성을 실험을 통해 검증하고자 하였다. 지지력 보강 역할을 수행하는 PET매트는 재하실험을 수행하여 효율성을 검증하였다. 또한, 폐색 방지 역할을 수행하는 PP매트는 하중재하와 강우 침투, 성토재의 특성에 따른 폐색 조건을 찾고 폐색에 의한 통수능 변화량를 파악하였다. PET매트의 재하실험 결과, PET매트가 설치되지 않으면 쇄석이 점토지반에 관입되며 파괴되었으며, PET매트 설치시 연약지반의 보강 효과가 큰 것을 알 수 있었다. 또한, PP매트가 없는 경우에는 성토재의 점착력이 작으면 쇄석배수층이 쉽게 폐색되며, 이로 인해 쇄석배수층의 통수능이 약 98%정도 감소되었다.

References

1.Kim, S. K., Kim, H. T., and Kong, K. Y. (2001), “Evaluation of Required Discharge Capacity for Prefabricated Vertical Drains”, Journal of Korea Geotechnical Society, Korea Geotechnical Society, Vol.7, No.1, pp.35-45.

2.Lee, J. Y., Chun, H. P., Jeong, W. C., and Lim, H. S. (2008), “A Study on Uilization of Recycled Aggregates as Lateral Drain for Soft Ground Improvement”, Journal of Korea Geotechnical Society, Korea Geotechnical Society, Vol.24, No.10, pp.5-15.

3.Jung, K. H., Lee, Y. G., Lee, S. Y, Kim, J. S., and Kim, B. T. (2006), “The Design Case of Lateral Drain Using Crushed Stone Mat”, Geotechnical Engineering, Korea Geotechnical Society, Vol.22, No.7, pp.28-39.

4.John, N. W. M. (1987), Geotextiles, Chapman and Hall.

Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 29
No :11
Pages :17-27
Received Date : 2013-06-07
Revised Date : 2013-09-11
Accepted Date : 2013-10-10
DOI :https://doi.org/10.7843/kgs.2013.29.11.17

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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