Lateritic soils derived from migmatite-gneiss, granite, charnockite and quartzite from Basement Complex terrain in Southwestern Nigeria were investigated for their basic geotechnical properties. This is with a view to analyzing variations in liquid limits, dry densities and moisture contents of the soils between and within parent rock groups. The significance of mean group (parent rock) differences was tested at 5% level of significance (p = 0.05) using one-way multivariate analysis of variance (one-way MANOVA). Results obtained indicate significant main effects of parent rock on liquid limit (F (3, 8) = 56.11, p < 0.001, partial η2 = 0.955), moisture content (F (3, 8)= 5.17, p = 0.028, partial η2 = 0.660), and dry density (F (3, 8)= 6.88, p < 0.013, partial η2 = 0.721). Calculated effect size for each variable reveals 96, 72 and 66 % of variance in liquid limit, dry density and moisture content respectively are accounted for by mean group (parent rock) differences. Scheffe post hoc test compared the dependent variables among the four parent rock groups in a multiple pair-wise manner. It indicates that liquid limit is the most sensitive to parent rock difference among the three variables investigated.
Basement complex rocks, dry density, moisture content, one-way MANOVA, southwestern Nigeria
OWOSENI JOSHUA OLUWASANMI , SEGUN O. ARO "Effect Of Parent Rock On Liquid Limits And Compaction Characteristics Of Residual Lateritic Soils" Iconic Research And Engineering Journals Volume 2 Issue 6 2018 Page 69-74
OWOSENI JOSHUA OLUWASANMI , SEGUN O. ARO "Effect Of Parent Rock On Liquid Limits And Compaction Characteristics Of Residual Lateritic Soils" Iconic Research And Engineering Journals, 2(6)