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

Korean Geo-Environmental Society (한국지반환경공학회)
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Densification Method of Controlled Low Strength Materials Made with Coal Ashes

수중 가압식 매립방법을 이용한 석탄회 저강도고유동화재의 고밀도화 특성

  • Kim, Juhyong (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Cho, Samdeok (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kim, Ukgie (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Kong, Jinyoung (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Jung, Hyuksang (Structural Health Management Team TF, Korea Railroad corp.) ;
  • Chun, Byungsik (Department of Civil and Environmental Engineering, Hanyang University)
  • Published : 2013.02.01
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Abstract

This study introduces a densification technique of controlled low strength materials (CLSM) made with coal ashes by pump discharge pressure. Based on a small-scale laboratory test results, unit weight of CLSM around discharge pipe is greater than that of relatively some distant area from discharge pipe. It is also found that densification of CLSM depends on not only mixture rate of pond ash but also fly ash and location of discharge pipe.

본 연구에서는 수중 가압식 매립방법을 이용하여 석탄회를 주재료로 하는 저강도 고유동화재(CLSM)를 대상으로 매립재 고밀도화 가능성에 대한 모형시험을 수행하고 그 결과를 분석하였다. 배출압에 의한 밀도 변화는 저강도 고유동화재를 구성하는 매립회와 비회의 배합비에 큰 영향을 받고 배출관의 위치에 따라서도 큰 영향을 받는 것으로 나타났다. 수중에서 가압 배출하는 경우, 배출관 주변을 중심으로 단위중량이 상대적으로 큰 것으로 나타나 배출압으로 인한 주변지반 밀도 증가효과가 발생하는 것으로 나타났으며, 실제 매립현장에서도 배출압의 효과를 이용할 수 있을 것으로 판단된다.

Keywords

References

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