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This This This This study was carried out to evaluate the effect of high loss on ignition content cement kiln dust on the study was carried out to evaluate the effect of high loss on ignition content cement kiln dust on the study was carried out to evaluate the effect of high loss on ignition content cement kiln dust on the study was carried out to evaluate the effect of high loss on ignition content cement kiln dust on the stabilization of highway expansive soils. stabilization of highway expansive soils. stabilization of highway expansive soils.

Thi Thi Thi This s s s study wa study wa study wa study was carried out to evaluate the effect of bagasse ash s carried out to evaluate the effect of bagasse ash s carried out to evaluate the effect of bagasse ash s carried out to evaluate the effect of bagasse ash on the California bearing ratio of lateritic soil. on the California bearing ratio of lateritic soil. on the California bearing ratio of lateritic soil. on the California bearing ratio of lateritic soil. Laboratory tests were performed on the natural and bagasse ash treated soil samples in accordance with BS 1377 Laboratory tests were performed on the natural and bagasse ash treated soil samples in accordance with BS 1377 Laboratory tests were performed on the natural and bagasse ash treated soil samples in accordance with BS 1377 Laboratory tests were performed on the natural and bagasse ash treated soil samples in accordance with BS 1377 (1990) and BS 1924 (1990) respectively. Treated specimens were prepared by mixing the soil wi (1990) and BS 1924 (1990) respectively. Treated specimens were prepared by mixing the soil wi (1990) and BS 1924 (1990) respectively. Treated specimens were prepared by mixing the soil wi (1990) and BS 1924 (1990) respectively. Treated specimens were prepared by mixing the soil with th th th bagasse ash in bagasse ash in bagasse ash in bagasse ash in steps of 0, 2, 4, 6 and 8 % by weight of dry soil steps of 0, 2, 4, 6 and 8 % by weight of dry soil steps of 0, 2, 4, 6 and 8 % by weight of dry soil steps of 0, 2, 4, 6 and 8 % by weight of dry soil and contaminating it with used oil in steps of 0, 2, 4, and 6 % by and contaminating it with used oil in steps of 0, 2, 4, and 6 % by and contaminating it with used oil in steps of 0, 2, 4, and 6 % by and contaminating it with used oil in steps of 0, 2, 4, and 6 % by weight of dry soil weight of dry soil weight of dry soil weight of dry soil. The preliminary. The preliminary. The preliminary. The preliminary laboratory laboratory laboratory laboratory investigation carried out on the natural lateritic soil shows that it investigation carried out on the natural lateritic soil shows that it investigation carried out on the natural lateritic soil shows that it investigation carried out on the natural lateritic soil shows that it fall fall fall falls under Silt s under Silt s under Silt s under Silt-Clay material of Group A Clay material of Group A Clay material of Group A Clay material of Group A-6 using AASHTO classification and inorganic clay material 6 using AASHTO classification and inorganic clay material 6 using AASHTO classification and inorganic clay material 6 using AASHTO classification and inorganic clay material of low to of low to of low to of low to medium plasticity medium plasticity medium plasticity medium plasticity CL according to Unified Soil Classification System (USCS). The specific gravity of the soil samples CL according to Unified Soil Classification System (USCS). The specific gravity of the soil samples CL according to Unified Soil Classification System (USCS...

This study investigated the soil bearing capacity and foundation settlement characteristics of Minna City Centre development site using standard penetration test (SPT) data obtained from10 SPT boreholes at 0.6, 2.1 and 3.6 m depths to correlate soil properties. Evaluation of foundation bearing capacity and settlement characteristics for geotechnical preliminary design of foundations was carried out using some conventional empirical/analytical models and numerical modelling. The aim was to investigate and determine the geotechnical parameters required for adequate design of Physical structures of the proposed Minna City Centre, at Minna the capital of Niger state. The SPT N-values were corrected to the standard average energy of 60% (N60) before the soil properties were evaluated. Using the corrected N-values, allowable bearing pressure and elastic settlement of shallow foundations were predicted at 50 kN/m2 applied foundation pressure. The numerical analysis results using Plaxis 2D, a finite element code, shows the analytical/empirical methods of estimating the allowable bearing pressure and settlements of shallow foundations that provided acceptable results. Results obtained show that an average bearing capacity value of 100 – 250 kN/m2 can be used for shallow foundations with embedment of 0.6 to 3.6 m on the site.  http://dx.doi.org/10.4314/njt.v36i3.1

Strength characteristics of foundation soils in the Permanent site of the Federal University Lokoja in Kogi State were evaluated based on standard penetration test (SPT) results using some conventional analytical models proposed by different researchers. The study was carried out in order to take precise engineering decisions on the type of foundations suitable for the proposed structures and to determine the optimal depth of foundation embedment.  The SPT N-values were first corrected to the standard average energy of 60% (N60) before they were used to correlate soil properties. Evaluation of the soil properties were done at foundation embedment depths of 0.6, 2.1 and 3.6 m. Results show that bearing capacity generally increased with boring depth. Based on the Meyerhof allowable bearing pressure estimation method, foundation pressures in the range of 150 – 600  kN/m2 were evaluated for use in the study area at shallow depths (depths in the range of 0.6 - 3.6 m).http://dx.doi.org/10.4314/njt.v36i3.2