Hydraulic Conductivity of Bagasse Ash Treated Black Cotton Soil as Waste Containment Facility

Publication Date : 05/08/2019


Author(s) :

Ibrahim, U.A, Muhammad, I.S, Alkali A. N.


Volume/Issue :
Volume 14
,
Issue 2
(08 - 2019)



Abstract :

Black cotton soil collected from a borrow pit in Billiri Local Government Area, Gombe State, in Northern Nigeria, was treated with up to 12% Bagasse Ash (BA) in stepped increment of 4% by mass of soil to explore its potential for use in waste containment facilities. The characterization of BA treated soil was investigated through index tests while permeability tests were used to observe the rate of flow through the soil matrix. Results showed a decrease in liquid limit from 83.0 to 65.8%, an increase in plastic limit from 28.2 to 33.1% and a decrease in plasticity index from 54.8 to 32.7% with increasing BA content for up to 12%. Compaction characteristics revealed increase in Maximum Dry Density (MDD) from 2.28 – 2.58Mg/m3 and decrease in Optimum Moisture Content (OMC) from 60.8 – 54.8% with increased BA content using West African Standard compactive effort. The permeability tests results at different molding water contents satisfied the regulatory limit of 1×10-9m/s set by American Society for Testing and Materials (ASTM D – 5084)


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