Journal of Geology & Geophysics
Open Access

Some geotechnical properties of soil derived from two migmatite rocks in Kwara State, south western Nigeria

International Conference on Geology

June 22-23, 2015 Florida, USA

Oresajo Bamidele

Posters-Accepted Abstracts: J Geol Geosci

Abstract :

This paper investigates the engineering characteristics of some lateritic soils in Kwara state, south western Nigeria. Soil samples were obtained from a lateritic road cut exposure in Omu Oko area and a dug well in Amoyo area of Kwara state. The tests conducted on the soil samples include classification tests, compaction test, California Bearing Ratio (CBR) and direct shear test. Results of the tests showed that Omo-Oko soil is an inorganic sandy clay of low to medium plasticity having a medium to high dry strength, a dilatancy of none to very slow, a medium toughness and falls in the CL region of the cassagrandeâ??s plasticity chart while the Amoyo Soil is an inorganic elastic silt having a dry strength of slight to medium, dilatancy of slow to none, toughness of slight to medium and falls in the MH region of the cassagrandeâ??s plasticity chart. According to the AASHTO classification system, Omu-Oko soil is a A-7-6 (11) soil while Amoyo soil is a A-7-5(8) soil. Conclusively, these soils have a general sub grade rating of fair to poor and are unsuitable for core materials in dams and as liners in sanitary land fills.