Hydraulic conductivity of compacted lateritic soil treated with bagasse ash

Lateritic soil treated with up to 12% bagasse ash content was compacted using reduced Proctor, standard Proctor, West African Standard and modified Proctor energies at −2, 0, 2 and 4% of optimum moisture content. The effects of moulding water, water content relative to optimum, initial degree of saturation at compaction, void ratio, bagasse ash content and compactive efforts on hydraulic conductivity of specimens were investigated. A compaction plane of acceptable zones for hydraulic conductivity based on regulatory value (≤ 1 × 10–9 m/s) gave 8% bagasse ash content as optimum reatment for use of the material in waste containment application.