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Properties of Liquid Chemical Grouting Material for Soil Grouting using Non-cement Binder

무시멘트 결합재를 사용한 지반 그라우팅용 약액주입재의 특성

  • Lee, Jae-Hyun (Department of Architectural Engineering, Chungnam National University) ;
  • Kim, Yong-Ro (Technology Research & Development Institute, Daelim Industrial) ;
  • Kim, Gyu-Yong (Department of Architectural Engineering, Chungnam National University) ;
  • Yoon, Seong-Jin (Technology Research Institute, Zian Industrial) ;
  • Mun, Kyoung-Ju (Technology Research Institute, Zian Industrial)
  • Received : 2015.09.07
  • Accepted : 2015.11.26
  • Published : 2016.02.20

Abstract

In this research, characteristic properties of gel time and homo gel strength of liquid chemical grouting material for soil grouting using non-cement binder(NCB) were measured according to kinds of liquid B's Binders, W/B of liquid B's Binders and the volume ratio between liquid A and liquid B in order to examine on the applicability of soil grouting material using non-cement binder. The test was performed using NCB-1, NCB-2, NCB-3 which are environment-friendly inorganic binders developed by means of collaboration by our research team and which are different from chemical composition ratio each other. In conclusion, it was found that NCB could be applied to liquid soil grouting material using non-cement binder and replace ordinary portland cement, because NCB had the most excellent performance in certain section of gel time and homo gel strength in condition of this experiment.

본 연구에서는 무시멘트 결합재(NCB)를 사용한 지반 그라우팅용 약액주입재의 B액 결합재의 종류, 결합재의 W/B 및 A액과 B액의 부피비에 따른 겔타임 및 호모겔강도의 변화 특성을 검토함으로써 무시멘트 결합재의 지반 그라우팅용 결합재로서의 적용 가능성을 검토하고자 하였다. 무시멘트 무기결합재는 당사에서 공동연구를 통해 개발된 시멘트를 대체할 수 있는 고로슬래그 기반의 친환경 무기결합재로서 화학조성비가 다른 NCB-1, 2, 3을 사용하여 실험을 진행하였다. 실험 및 현장 적용성 분석 결과, 겔타임 및 호모겔강도의 요구성능을 확보할 수 있는 결합재 종류별 W/B 및 A액과 B액의 부피비가 도출되었으며, W/B가 100~140%, A : B가 50 : 50~30 : 70인 조건에서 급결구간 및 중결구간의 경우 NCB가 OPC 대비 동일한 겔타임 수준에서 호모겔강도의 확보가 유리한 것으로 평가되어 NCB의 지반 그라우팅용 결합재로서의 적용이 가능할 것으로 판단된다.

Keywords

References

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