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Published:
Sep 24, 2014DOI:
10.4314/njt.v33i4.21Keywords:
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Main Article Content
Comparative Assessment of the Geotechnical Properties of Residual Soils in Parts of Awka and Abuja Areas of Nigeria
Abstract
Residual soil samples from the zone of accumulation were collected from road-cut exposures in Awka (Aks), and Abuja (Abs) within the Nigerian sedimentary and Basement terrains respectively. The soil samples were tested for their geotechnical properties with a view to ascertaining their index and engineering properties in order to determine their suitability for use as construction materials. The liquidity and consistency indices are -0.09 &-0.49, and 1.09 & 1.49 for Abs and Aks respectively. B Aks and Abs have shear strength (84.84 & 88.91) KN/m2, frictional angle; (44 & 33)0 , cohesion; (0.1 & 31.65) KN/m2, unconfined compressive strength; (85.89 & 97.49) KN/m2, B maximum dry density; (18.54 &15.35)KN/m3 with optimum moisture content of (14.2 & 22.5)% and group indices of (0.022 & 9.54) respectively. Overall, with adequate drainages, Abs will make a better subgrade in flexible pavement design whereas Aks will be better suited for use in slopes and embankments.
