Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Effects of Alkali-Activated Soil Stabilizer Binder Based on Recycling BP By-Products on Soil Improvement

BP부산물을 재활용한 알칼리활성화 지반개량재의 지반개량효과에 관한 연구

  • 이영원 (우석대학교 건축.인테리어디자인학과) ;
  • 강석표 (우석대학교 건축.인테리어디자인학과) ;
  • 김재환 ((주)AMS엔지니어링)
  • Received : 2014.06.19
  • Accepted : 2014.06.27
  • Published : 2014.06.30
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Abstract

The enormous quantity of 'Bayer-Process by-products' (BP by-products) discharged by industries producing alumina from bauxite represents an environmental and economical problem. As it is mainly composed of $Fe_2O_3$, $Al_2O_3$, $SiO_2$, CaO and $Na_2O$, it is thought that using BP by-products as a construction material is an effective way to consume such a large quantity of alkaline waste. In this study, This study evaluates the effect of alkali-activated binder based on recycling BP by-products on soil improvement through the evaluation of slope stability and seepage flow numerical analysis. The results of analysis of ground slope safety at dry season and wet season meet standard (Ministry of Land, Infrastructure and Transport, 2006) Especially, when wet season, the ground used soil improving material meet standard, while the ground used soil-nailing method doesn't. Also, permeability coefficient of improved soil is smaller than that of natural soil and saturation depth of reinforced ground surface with improve soil is lower than that of natural soil.

연구에서는 BP부산물을 혼입한 알칼리활성 무시멘트 지반개량재의 사면안정 및 침투류 수치해석을 통하여 원지반토와 비교하여 개량토의 지반개량 효과를 검토하고자 하였다. 그 결과 사면안정해석을 실시한 결과에서는 건기시, 우기시 모두 건설공사 비탈면 설계기준(국토해양부, 2006)의 기준안전율을 만족하는 것으로 확인되었으며, 우기시 쏘일네일링으로 기준안전율을 만족하지 못하는 사면이 개량토로 보강하여 기준치를 만족한 것으로 나타났다. 또한 침투류 해석을 실시한 결과 개량토의 투수계수가 작아지는 것으로 나타났으며, 원지반토에 비하여 개량토로 표면보강된 경우는 포화심도가 낮아진 것으로 나타났다.

Keywords

References

  1. Buck, A. and burkes, J. p. (1981), Characterization and Reactivity of Silica Fume. Proceedings, 3rd International Conference on Cement Microscopy, Houston, International Cement Microscopy Association. Duncanville. Texas, 279-285.
  2. Chida, s. (1982), Dry Jet Mixing Method, State-of-the-Art on Improvement Methods for Soft Ground. Japan Society of Soil Mechanics and Foundation Engineering, 69-76.
  3. Croft, J. B. (1967), The Influence of Soil Mineralogical Composition on Cement stabilization. Geotechnique. 17, 63-80.
  4. Fang, H. Y, ed. (1991), Foundation Engineering Handbook, 2nd Edition Von Nostrand Reinhold. New York. 317-337
  5. Federal Highway Administration. (1979), Soil Stabilization in Pavement Structures : A User's Manual. Vol. 2", Report No. FHW A-IP-80-2.
  6. Felt, Earl J. (1955), Factors Influencing Physical Properties of Soil-Cement Mixtures. Bulletin. 108, Highway Research Board, Washington, D. C. 138-162.
  7. Ikeda, K. (1985), Utilization of red mud as a new type of cement. Proc. Beijing Inter. Symp. Chem. Cem. Concr. 595-607.
  8. Kim, H.J. (2007), Study on the Chemical Property and Application of Red mud, master's degree, Chonnam National University, Korea.
  9. Ministry of Land (2006), Construction of Slope Design Criteria, Chapter 4 Building a slope design, 101-138.
  10. Ministry of Land (2011), Construction of Slope Design Criteria, Chapter 4 Building a slope design, 19-36.
  11. Mun, G.J. (2004), Properties of Non-Sintered Cement and Concrete Recycled with Industrial Waste, Ph.D thesis, Chonbuk National University, Korea.
  12. Pan Zhihua et al. (2003), Properties and microstructure of the hardened alkali-activated red mud-slag cementitious material, Cement and Concrete Research, 33, 1437-1441. https://doi.org/10.1016/S0008-8846(03)00093-0
  13. Park, S.G. (2008), Experimental Study on Soil Mixed Pavement with Red Mud and Fly Ash. master's degree, Andong National University, Korea.

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  1. Study on Semi-Dry Process Developement of BP's Sludge by Non-Heating Manufacture Method vol.3, pp.4, 2015, https://doi.org/10.14190/JRCR.2015.3.4.313