IJMTES – INFLUENCE IN STRENGTH OF CLAYEY SOIL USING ALKALI ACTIVATED FLY ASH

Journal Title : International Journal of Modern Trends in Engineering and Science

Paper Title : INFLUENCE IN STRENGTH OF CLAYEY SOIL USING ALKALI ACTIVATED FLY ASH

Author’s Name : Pandya Rishi | A J Shahunnamed

Volume 04 Issue 04 2017

ISSN no :  2348-3121

Page no: 171-174

Abstract – Ordinary Portland cement are used to stabilize clayey soils which have several shortcomings especially from an environmental perspective. Thus, it necessitates to undertake comprehensive research work to determine alternative treatment. Geopolymer is used as binder. The chemical reaction between alkali and fly-ash having alumina and silica contents creates alumina-silicate crystalline chain. Due to its high strength, low energy consumption and CO2 emission it offers an alternative to traditional binders like OPC. Present study is about to stabilize locally available clayey soil using sodium based alkaline activator and fly-ash. Activator is made from 1 molar of sodium silicate along with NaOH concentration of 8, 10 and 12 molar(M) and it is mixed at a ratio of 2:1. Fly ash is kept as 10%, 15% and 20% by weight of total solid (clay + fly ash) and finding optimum moisture content (OMC) for each mixture. Samples prepared at OMC and 3% dry side of OMC and effectiveness of the binder is tested using UCS test at curing periods of 7, 14 and 28 days and compared with that of common fly-ash based binder. Chemical analysis is conducted to know the chemical composition of fly-ash and clay. Result shows successive improvement in soil.

Key Words – CL, Fly Ash, Alkli Activated Fly Ash,Geopolymer, NaOH, Na2SiO3, Soil Stabilization, UCS

References

  1. A.Fernandez-Jimenez, A Palomo (2005) ‘Composition and microstructure of alkali activated fly ash binder: Effect of the activator’ (29 March 2005).
  2. Barden L, Sides G. ‘Sample disturbance in the investigation of clay structure’ Géotechnique 1971; 21(3):211–22.
  3. Dr. P .Purushotam Raj, “Ground improvement techniques”, Laxmi publication (P) LTD.
  4. Khedari J, Watsanasathaporn P, Hirunlabh J. ‘Development of fibre-based soil–cement block with low thermal conductivity’ Cem Concr Compos 2005; 27(1):111–6.
  5. Mo Zhang a, Hong Guo b, c, Tahar El-Korchi a, Guoping Zhang d, Mingjiang Tao a, (2013) ‘Experimental feasibility study of Geopolymer as the next-generation soil stabilizer’ Construction and Building materials 47(2013) 1468-1478,Elsevier.
  6. Nuno Cristelo, Stephanie Glendinning, Amandio Teixeira pinto “Deep soft soil improvement by alkaline activation” DOI: 10.1680/grim.2011.164.1.1 proceeding of the Institution of Civil Engineers (2011) 1-10.
  7. Nuno Cristelo, Stephanie Glendinning, Lisete Fernandes, Amandio Teixeira pinto “Effect of calcium content on soil stabilisation with alkaline activaton” Construction and Building Materials 29 (2012) 167-174,Elsevier.
  8. Nuno Cristelo a,b, Stephanie Glendinning c, Tiago Miranda d, Daniel Oliveira d, Rui Silva d(2012) ‘Soil stabilization using alkaline activation of fly ash for self-compacting rammed earth construction’ Construction and Building materials volume 36 727-735,Elsevier.
  9. Nuno Cristelo, Stephanie Glendinning, Lisete Fernandes, Amandio Teixeira Pinto “Effects of alkaline-activated fly ash and Portland cement on soft Soil stabilisation” DOI 10.1007/s11440-012-0200-9, Acta Geotechnica (2013).
  10. Patimapon sukmak, Suksun Horpibulsak, Shui-Long Shen, Prinya Chindraprasirt, Cherdsak Suksiripattanapong “Factor influencing strength development in cly-fly ash Geopolymer” Costruction and Building Material 47 (2013) 1125-1136,Elsevier.
  11. Sarat Kumar Das, Partha Sarathi Parhi, ‘Stabilization of expansive soil using alkali activated fly ash’ Proceedings of Indian Geotechnical Conference December 22-24,2013, Roorkee.
  12. Sara Rios, Nuno Cristelo, Ant onio Viana da Fonseca, and Cristiana Ferreira “Structural Performance of Alkali-Activated Soil Ash versus Soil Cement” DOI: 10.1061/ (ASCE)MT.1943-5533.0001398 (2015) American Society of Civil Engineers.
  13. Zhang M, Guo H, Korchi T E, Zhang G, Tao M (2013).
    “Experimental feasibility study of geopolymer as the next generation soil stabilizer”. Construction and building materials, pp 1468-1478.
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