Effect of Treatment Compositions on the Plasticity of Tropical Red Soil Treated with Bacillus Coagulans

The study evaluated the effect of four treatment compositions on plasticity tropical red soil (Lateritic soil) admixed with Bacillus coagulans (B. coagulans). Samples for Atterberg limits test were prepared using compositional variables. They include 25% B. suspension and 75% cementation reagent, (25%B /75%C); 50% reagent (50% B /50%C); (75%B /25% C) above three being in equivalent volumes corresponding liquid limit(LL) optimum moisture content (OMC) compaction, to be both (i.e. OMC /50%OMC natural soil. Results showed that LL for; 25%B /75% C, /50% C /25%C generally increased from 0 up peak values at 1.8 x 109 cells/ml then declined 2.4 cells/ml. In case samples treated B/50% initially decreased 6.0 108 thereafter significantly. Plastic limit (PL), Plasticity index (PI) Linear shrinkage (LS), recorded improvement. Regression analysis best composition (i.e 75%B /25%C) has regression coefficient 91.8%. Based considered, 75%B/25%C enhanced workability significantly is suggested geotechnical engineering applications such as road pavements are lightly trafficked.