Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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A Study on the Ground Reinforcement of Jeju Scoria Layer by Chemical Grouting

약액주입에 의한 제주도 송이지층의 지반보강에 관한 연구

  • Yang, Kiho (Offshore Wind Energy Research Division, GK Engineering) ;
  • Park, Jeongjun (Research Institute, GK Engineering) ;
  • Kim, Younghun (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Byun, Yoseph (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Lee, Eunjong (Dept. of Civil and Environmental Engineering, Hanyang Univ.) ;
  • Chun, Byungsik (Dept. of Civil and Environmental Engineering, Hanyang Univ.)
  • Received : 2013.11.19
  • Accepted : 2014.01.08
  • Published : 2014.02.01
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Abstract

Recently, public works becoming bigger in Jeju are implemented various kinds of ground reinforcement method including the chemical grouting method. In this study, we have been investigated on the proper material and the injection condition for the excellent injection effect and the excellent strength of injection material and the permanent waterproof and reinforcement through the experiment. The kind of injection material has been selected through the uniaxial compression test and the endurance test of injection material as the chamber test. An experiment was performed with model ground made of scoria, the injection performance of selected material has been identified through the evaluation test of injection range using the decision test of injection amount and the calibration chamber test. As a result of test, it has been analyzed that MSG appeared to have the excellent strength, durability and injection performance all compared with the ordinary cement, this result is judged to be possible as the ancillary data of design at time of design and construction with the chemical grouting method in the future.

최근 대형화되고 있는 제주도의 토목공사에 약액주입공법을 비롯한 여러 가지 종류의 지반보강공법을 실시하고 있다. 이에 본 연구에서는 지반보강공법 시에 주입효과가 탁월하고, 주입재의 강도가 우수하며, 영구적인 차수 및 보강에 적합한 재료, 주입조건 등을 실험을 통해 규명하였다. 실내시험으로는 제주도 송이 지반의 기본 물성시험을 실시하였고, 주입재의 일축압축강도시험과 내구성시험을 통해 주입재의 종류를 선정하였다. 송이의 모형지반을 조성하여 주입량 결정시험 및 모형토조를 이용한 주입범위 평가시험을 통해 선정된 재료의 주입성능을 확인하였다. 시험결과 MSG가 보통시멘트에 비해 강도, 내구성, 주입성능 모두 우수하게 나오는 것으로 분석되어 향후 약액주입공법으로 설계 및 시공 시 설계보조자료로서 가능할 것으로 판단된다.

Keywords

References

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