Strength and Slope Stability Analysis of Sakaleshpura Lateritic Soil Stabilized with Silica Fume and Randomly Distributed Artificial Polypropylene Fibers

The present Lateritic Soil(LS) is collected from Dhonigal village, Sakleshpura Taluk, Hassan District, Karnataka(s),India, where a recent natural slope failure has occurred due to human interference in March 2025. To give a rational and economic solution approach, the lateritic soil has been stabilized with 5% Silica Fume (SF)(by weight of soil). All the tests were performed in the triaxial loading frame with a strain rate of 1.25mm/min. samples intended to test immediately were test on the same day of casting where as samples intended to test with curing were tested on curing period. In order to increase the passive inclusive in the failure surface of the slopes, lateritic soil stabilized with optimum silica fume is treated with optimum percentage of Randomly Distributed Poly Propylene Fibers (RDPPF). To validate the improvement in the stability of the treated soil, Factory of safety for untreated and treated soil is determined using stability analysis of slope by method of slices for three trial slopes 1:1, 1:1.5 and 1:2. It has concluded that L.S.+5%S.F.+0.5%RDAPFF with as slope of 1:5 shows 39% improvement of its stability on compared with Lateritic soil alone where as Lateritic soil treated with 5% silica fume shows lower factor of safety on compared with above combination. Hence addition of fibers to treated soil shows good improvement in the factor of safety and stability analysis.