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Study on Engineering Characteristics of Mixed Material and Mix Ratio Design to Develope Pipe Mixing Method

관중혼합처리공법 개발을 위한 혼합토 특성 및 최적배합비 산정에 관한 연구

Sang-Jae Han1
,
Byung-Il Kim2*
,
Kang-Han Hong3
,
Byung-Yoon Kang4
한 상재1
,
김 병일2*
,
홍 강한3
,
강 병윤4
1President, Expert Group for Earth and Environment
2Research Director, Dept. of Geotechnical Engineering, Expert Group for Earth and Environment
3Deputy General Manager, Dept. of Geotechnical Engineering, Expert Group for Earth and Environment
4Researcher, Future Policy Research Group, Rural Research Institute, KRC
*교신저자. *Corresponding Author. 
30 March 2015. pp. 33-41
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Abstract

In this study, laboratory tests (flow, unit weight, unconfined compressive strength and bleeding tests) were performed to evaluate engineering properties of treated soil to improve pipe mixing method. As result, flow and bleeding properties are proportional to the water contents. The unit weight and unconfined compressive strength is decreased as the water contents increased. Comparing equipments contact pressure with bearing capacity of the mixed soil for dozer, backhoe and belt conveyor are immediately appliable. The applicable water content range is estimated from 80% to 200% by pipe mixing method using cement. Also, The design chart is developed from the results.

Keywords
Pipe mixing method
Dredged material
Cement treated soil
Design chart

본 연구에서는 관중혼합처리공법 개발을 위해 혼합토의 공학적 특성 평가에 관한 실내실험(유동성, 단위중량, 일축압축강도 및 블리딩 시험)을 수행하였다. 실험 결과 흐름 및 블리딩 특성은 함수비에 비례하여 증가하는 것으로 나타났다. 단위중량과 일축압축강도는 함수비 증가에 따라 감소하는 것으로 나타났다. 각 주행 장비별 접지압과 혼합토의 지지력을 비교한 결과 벨트 컨베이어, 백호우, 도저 등의 장비가 즉시 진입 가능한 것으로 검토되었다. 결과적으로 고화재를 사용한 관중혼합처리공법에서 적용 가능한 함수비 영역은 80~200%로 평가되었다. 또한, 본 연구 결과로부터 설계 차트를 개발하여 제시하였다.

References
1
1.Han, S. J., An, D. W., Park, J. M., Kim, S. S (2009), “Engineering Properties of Liquefied Stabilized Soil by Contents of Humic Acid”, Journal of Korean society of civil engineering, Vol.29, No.5, pp.229-237.
2
2.Korea institute of ocean science & technology (2000), Recycling Strategies of Dredged Soils(I), Ministry of maritime affairs & fisheries.
3
3.Korea Ports & Harbours Association (2005), “Design Standards for Harbour and Fishery Port”, Ministry of oceans and fisheries.
4
4.Meyerhof, G.G. (1974), “Ultimate bearing Capacity of footings on sand layer overlying clay”, Canadian Geotechnical Journal, Vol.11, No.2, pp.223-229.
5
5.Nam, S. K (2012), Characteristics of Unconfined Compressive Strength of Soil Mixed Stiffness Material for Recycling of Dredged clay, Master Thesis, Kyungpook national university.
6
6.Terzaghi, K. (1943), “Theoretical Soil Mechanics”, John Wiley & Sons, New York.
7
7.Yoon, G. L, Yoon, Y. W, Kim, S. H, Bae, Y. S (2010), “Compressive Strength and Environmental Investigation for Beneficial Use of Dredged Sediments”, Journal of Korean society of civil engineering, Vol.30, No.2, pp.119-13.
8
8.財団法人沿岸技術研究センター (2009), “管中混合固化処理工法 技術マニュアル”.
Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 14
  • No :1
  • Pages :33-41
  • Received Date : 2015-03-11
  • Revised Date : 2015-03-20
  • Accepted Date : 2015-03-22
  • DOI :https://doi.org/10.12814/jkgss.2015.14.1.033
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