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Study of rice husk ashes influence on djagble clay soil characteristics in Togo

Author Affiliations

  • 1High National School of Engineers, University of Lome, 01 BP 1515, Lome 01, TOGO
  • 2High National School of Engineers, University of Lome, 01 BP 1515, Lome 01, TOGO
  • 3High National School of Engineers, University of Lome, 01 BP 1515, Lome 01, TOGO
  • 4High National School of Engineers, University of Lome, 01 BP 1515, Lome 01, TOGO

Res. J. Engineering Sci., Volume 9, Issue (1), Pages 1-6, January,26 (2020)


Rice husks and their ashes are agricultural by-products coming from rice decortication and containing a significant rate of silica causing its application in the field of the construction. In this paper the effect of adding rice husk ash on the characteristics (CBR, Proctor density and water content, Atterberg limits) of a plastic clay soil is studied. For this, rice husk ash is added to the soil in various proportions. The results obtained from the tests carried out make it possible to say that rice husk ash addition to clay soil reduces clay soil plasticity, swelling and density but increases its consistency and its CBR index.


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