Shear strength characteristics and chemical characteristics of leachate-contaminated lateritic soil

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dc.contributor.authorSunil, B.M.
dc.contributor.authorShrihari, S.
dc.contributor.authorNayak, S.
dc.date.accessioned2026-02-05T09:36:42Z
dc.date.issued2009
dc.description.abstractLeachate is a hazardous liquid and is a major cause of concern in landfills. Numerous environmental problems such as soil and groundwater contamination occur in unlined landfills due to free flow of leachate. Large quantities of leachate-contaminated soils result from open dumping in the study area. These dump yards receive large quantities of municipal solid waste which includes chemical and industrial wastes. Large areas of land are currently being used for this purpose. An extensive laboratory testing program was carried out to determine the properties of clean and contaminated lateritic soils. Laboratory prepared municipal solid waste leachate was used in this study. Contaminated specimens were prepared by mixing the soils with MSW leachate in the increments of 0%, 5%, 10% and 20% by weight to vary the degree of contamination. The results showed that the MSW leachate affects the Atterberg limits, shear strength and chemical characteristics of the lateritic soils. The liquid limit and the plasticity index of the lateritic soils increases with MSW leachate concentration. For specimens tested at the Proctor density, effective cohesion increases and effective friction angle decreases due to increase in leachate concentration. This is attributed due to the increase in clay content of lateritic soil after interaction with the leachate. This led to increase in cohesion parameter and the friction angle decreases. The pH measurements of lateritic soil contaminated with MSW leachate indicated an increase in pH values. This is also accompanied by slight increase in the cation exchange capacity of the soil. The change in chemical characteristics of lateritic soil contributed due to addition of leachate may be detrimental to foundation concrete in real field conditions. The present work deals with an attempt to study the effect of leachate on the Atterberg limits, shear strength properties and chemical characteristics of lateritic soil. © 2009 Elsevier B.V. All rights reserved.
dc.identifier.citationEngineering Geology, 2009, 106, 46054, pp. 20-25
dc.identifier.issn137952
dc.identifier.urihttps://doi.org/10.1016/j.enggeo.2008.12.011
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/27638
dc.subjectAtterberg limits
dc.subjectCation exchange capacities
dc.subjectChemical characteristics
dc.subjectClay contents
dc.subjectContaminated soils
dc.subjectEffective cohesions
dc.subjectEnvironmental problems
dc.subjectField conditions
dc.subjectFree flows
dc.subjectFriction angles
dc.subjectGround water contaminations
dc.subjectHazardous liquids
dc.subjectLaboratory testing
dc.subjectLateritic soils
dc.subjectLeachate
dc.subjectLeachate concentrations
dc.subjectLiquid limits
dc.subjectMunicipal solid wastes
dc.subjectPh measurements
dc.subjectpH values
dc.subjectPlasticity indices
dc.subjectStrength characteristics
dc.subjectStrength properties
dc.subjectStudy areas
dc.subjectUnlined landfills
dc.subjectAdhesion
dc.subjectClay minerals
dc.subjectContamination
dc.subjectFriction
dc.subjectGroundwater
dc.subjectGroundwater pollution
dc.subjectHydrogeology
dc.subjectIndustrial wastes
dc.subjectLeachate treatment
dc.subjectLeaching
dc.subjectLiquids
dc.subjectpH effects
dc.subjectRefuse disposal
dc.subjectShear strength
dc.subjectSoil testing
dc.subjectSoils
dc.subjectSolid wastes
dc.subjectTesting
dc.subjectSoil pollution
dc.subjectAtterberg limit
dc.subjectlaterite
dc.subjectleachate
dc.subjectmixing
dc.subjectmunicipal solid waste
dc.subjectshear strength
dc.titleShear strength characteristics and chemical characteristics of leachate-contaminated lateritic soil

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