Jordan Journal of Civil Engineering

Effect of Bagasse Ash on Lime Stabilized Lateritic Soil


Sadeeq, J. A.; Ochepo, J.; Salahudeen, A. B.; Tijjani, S. T.;


This study was carried out to evaluate the effect of bagasse ash (BA) on lime stabilized lateritic soils. Laboratory tests were performed on the natural and lime/bagasse ash treated soil samples in accordance with BS 1377 (1990) and BS 1924 (1990), respectively. Treated specimens were prepared by mixing the soil with lime and/or bagasse ash in variations of 0, 2, 4, 6 and 8% by weight of the soil. The preliminary investigation carried out on the natural lateritic soil found in Shika, Kaduna State, Nigeria shows that it falls under Silt-Clay material of Group A-6(9) using AASHTO classification and inorganic clay material CL according to Unified Soil Classification System (USCS). The natural soil has a liquid limit value of 36.32, a plastic limit of 21.30% and a plasticity index value of 15.02 %. The maximum dry density (MDD) of the soil was 1.69 kg/m3 and an Optimum Moisture Content (OMC) value of 16.8 %. Unconfined compressive strength (UCS) values of 269, 404 and 591 kN/m2 at 7, 14 and 28 days curing periods, respectively, were recorded for the natural soil. Unsoaked and soaked California Bearing Ratio (CBR) values of 13 and 7%, respectively, were recorded for the natural lateritic soil. Peak UCS and CBR values of 698 kN/m2 and 43% were recorded for soil treated with 8% lime/6% bagasse ash. The peak CBR value met the 20 – 30 % requirement for sub-base reported by Gidigasu and Dogbey (1980) for materials compacted at optimum moisture content, while the peak UCS value fell short of the 1710 kN/m2 unconfined compressive strength value specified by by Transport and Road Research Laboratory (TRRL) (1977) as a criterion for adequate stabilization using ordinary portland cement.


Bagasse ash, Lime, Stabilization, Lateritic soil, Unconfined compressive strength