Effects of Soldier-Ant Mound (SAM) on the Strength Characteristics of Lateritic Clay Soils

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dc.contributor.authorOgundalu, A.O.
dc.contributor.authorAdeboje, A.O.
dc.contributor.authorAdelaja, F.
dc.date.accessioned2019-09-16T14:26:59Z
dc.date.available2019-09-16T14:26:59Z
dc.date.issued2014
dc.descriptionStaff publicationsen_US
dc.description.abstractThe aim of this work is to investigate the effect of Soldier-Ant Mound (SAM) on the strength characteristics of lateritic clay soils in order to improve their poor geotechnical properties for road pavement construction. Three soil samples were collected from a burrow pit along the Lagos-Ibadan Expressway, Lagos, Nigeria. The samples were mixed with Soldier-Ant Mound in various proportions (0%, 2%, 4%, 6%, 8% and10% by weight) and subjected to soil strength tests: Compaction tests, California Bearing Ratio (CBR) and Unconfined Compressive Strength tests at the University of Lagos, Nigeria between June 2012 and July 2013. Results obtained were compared with the natural soil and standard values. The Atomic Absorption Spectroscopy, AAS, gave the exchangeable cations present in the Soldier-Ant Mound as: Calcium (Ca2+), Magnesium (Mg2+), Sodium (Na+), Potassium (K+) and Aluminium (Al3+). The plasticity index decreased with increase in SAM content which signifies a reduction in any swelling and deformation that may take place. The maximum dry density, soaked CBR and Unconfined Compressive Strength all increased with increase in SAM content. The addition of 10% SAM content reduced the plasticity index by 7.5% (from 25.8% to 23.9%) and increased the maximum dry density of the clay soil from 1660kg/m3 to 1750kg/m3 which is considered satisfactory to excellent. The Optimum moisture content of the clay soil was reduced by about 15%. The addition of 10% SAM increased the soaked CBR by 85% (from 10.43% to 19.35%) while the unconfined compressive strength of the Lateritic Clay Soil increased by 122% (from 40.32kN/m2 to 89.36kN/m2). Soldier-Ant Mound significantly improved the engineering properties of Lateritic Clay Soil. The results indicate that there is a potential in the use of Soldier-Ant Mound for improving the strength characteristics of lateritic soils for road pavement construction and other earth works.en_US
dc.identifier.citationOgundalu, A.O., Adeboje, A.O. and Adelaja, F., 2014. Effects of Soldier-Ant Mound (SAM) on the strength characteristics of lateritic clay soils. British Journal of Applied Science & Technology, 4(10), pp.1554-1565.en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/5626
dc.language.isoenen_US
dc.publisherSciencedomain internationalen_US
dc.relation.ispartofseriesBritish Journal of Applied Science & Technology;Vol.4(10)
dc.subjectSoldier-ant mound; lateritic clay soils; strength characteristics; California bearing ratio.en_US
dc.subjectSoldier-ant mounden_US
dc.subjectLaterictic clay soilsen_US
dc.subjectstrength characteristicsen_US
dc.subjectCalifornia bearing ratioen_US
dc.subjectResearch Subject Categories::TECHNOLOGY::Civil engineering and architectureen_US
dc.titleEffects of Soldier-Ant Mound (SAM) on the Strength Characteristics of Lateritic Clay Soilsen_US
dc.typeArticleen_US
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