ROLE OF NANO SILICA AND EGG SHELL POWDER IN AMENDING THE EARLY STRENGTH DEVELOPMENT OF CLALEY SOIL

Clayey soils are one of the problematic soil which is widespread in the country and has a low bearing capacity due to the presence of the montmorillonite material. This study investigates some of the mechanical properties of soft clay soil after adding the environmental waste material like egg shells. This study uses eggshell powder (ESP), Nano silica which can be used as a stabilizer for soft clay while preserving natural limestone from consumption. ESP can be used as a replacement for limestone due to some similarities in chemical composition between it and limestone components. The use of stabilizing technologies has significantly expanded in recent years specially when sites are frequently construction in poor land locations. This study suggests using nano-silica to improve clayey soil’s functionality. The motivation behind this research was to learn more regarding the properties of soil strengthen with ESP and Nano silica (NS) material. The index and engineering properties were carried out to access the behaviour of soil with the addition of eggshell powder. The ESP has the ability to controls the plasticity index of the soil. The standard proctor test was conducted to get the maximum dry density values and OMC. The UCS test was conducted for optimum dosages ESP and NS. The tests were also conducted for samples which were cured for 7 days. The strength value increased considerably on addition of ESP and NS. An experimental investigation was undertaken by treating clayey soil with Nano silica in four different concentration proportions of (0.3%, 0.6%,0.9%,0.12%). After that the ESP was blended in various proportions with the soil and 0.9% NS mixed soil at the rate 4%, 8%, 12%, and 16%. The investigation of an influence of Nano silica and ESP on Atterberg limits, C.B.R., U.C.S., O.M.C., and M.D.D. was done