Effect of Different Admixtures on Strength of Cement Grouted Soil

Grouting is mainly used for filling the empty voids or replacing the fluids inside voids with grout so that engineering properties of soil and rock medium, become better. Cement grouting is most common and also most important technique in construction industry for reducing permeability of mass and also increasing strength of formation. When cement hydrates and cures it make strong interlocking crystals and become almost impermeable. In civil engineering, there are many uses of grouting and now many materials are also available in market. Cement is still the most popular grouting material but to enhance its property is big concern. By adding some admixtures the performance can be improve. In this study admixture like accelerator, retarder and antibleeder is studied for strength aspects. For experiment direct shear test was done to find relation between normal stress and maximum shear stress. From the straight line slope we get angle of shearing resistance and vertical intercept give cohesion value for soil with and without admixture for 7 day curing.