EVALUATION OF STRENGTH AND LEACHING PROPERTIES OF SNAIL SHELL ASH (SSA) REMEDIATED PETROLEUM HYDROCARBON CONTAMINATED LATERITIC SOILS
- Authors
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FADUGBA O.G.
Federal University of Technology Akure, P.M.B.704 Akure, Nigeria
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- Keywords:
- Lateritic soil, Leaching, Petroleum Hydrocarbon, Snail Shell Ash (SSA), Stabilization
- Abstract
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The study examines the effect of Snail Shell Ash (SSA) as a stabilizing binder on the geoenvironmental properties of petroleum hydrocarbon contaminated lateritic soils (COCLS). The contaminated lateritic soil was obtained from a contaminated site. The snail shell ash (SSA) was sieved through 75 µm and was added to contaminated lateritic soil at varying percentages (0, 5, 10, and 15%) by weight. Soil index property and classification tests, Strength tests (unconfined compressive test, UCS and direct shear test) were then performed on the contaminated soil. The experimental testing results revealed a decrease in the consistency limits. The 10% binder addition produced the highest percentage increase in the strength characteristics of 710 kPa at 28 days of curing. Also, the compression index decreased from 0.093 to 0.063, while the recompression index declined from 0.025 to 0.012. The leachability characteristics of the COCLS decrease with an increase in the percentage of stabilizing binder with an optimal result in 10 % addition of SSA. The study shows the effectiveness of SSA in stabilizing COCLS and the possible use for stabilizing petroleum hydrocarbons contaminated lateritic soil.
- Author Biography
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- 2025-05-30
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