Abstract:

This study undertook geotechnical evaluation of selected lateritic soils in Ife Central Local Government Area. Osun State, Southwestern Nigeria. Lateritic soil samples were collected from active borrow pits within the study area. Laboratory tests such as natural moisture content determination, particle size analysis, specific gravity, Atterberg limits, compaction test, California bearing ratio (CBR) test and unconfined compression test were conducted on the soil samples using standard procedures. Results obtained were compared with the literature and the Federal Ministry of Works and Housing (FMWH) requirements. Using American Association of State Highway and Transport Officials (AASHTO) classification system, the soils fall within A-5, A-7-5 and A-7-6. Also, using Unified Soil Classification System (USCS), the soils fall within ML, MH, CL and CH. It was concluded that the soils are good for fill and subgrade in road construction. Relationships also exist between the engineering properties and Atterberg limits of the soils. It was recommended that other borrow pits within Ife Central Local Government Area should be investigated to determine their suitability for engineering applications.