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Geomechanics and Engineering
  Volume 8, Number 1, January 2015 , pages 67-79

Soil stabilization of clay with lignin, rice husk powder and ash
Hanifi Canakci, Aram Aziz and Fatih Celik

    This article presents the result of laboratory study conducted on expansive soil specimens treated with lignin, rice husk powder (RHP) and rice husk ash (RHA). The amount of lignin produced from paper industry and RHP were varied from 0 to 20% and RHA from 0 to 10% by weight. The treated specimens were subjected to unconfined compressive strength (UCS),swelling test and Atterberg limit tests. The effect of additives on UCS and atterberg limit test results were reported. It was observed that the additives and curing duration had a significant effect on the strength value of treated specimens. Generally (except the sample treated with 20% RHP for 3-day) with increasing additive and curing duration the UCS value increases. A RHP content of 15% was found to be the optimum with regard to 3-day cure UCS.
Key Words
    lignin; rice husk powder (RHP); rice husk ash (RHA); unconfined compressive strength (UCS); Atterberg limits; swelling
Department of Civil Engineering, University of Gaziantep, University road, Sehitkamil, Gaziantep, 27310, Turkey.

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