INFLUENCE ON PERMEABILITY OF DUNE SAND BLENDED WITH KOTASTONE SLURRY WASTEPratibha Choudhary and Niranjan VyasAbstract Soil is the loose weathered material over the earth crust, available in abundance naturally. Stabilisation of soil is the technique to improve the various engineering and mechanical properties of the soil to meet the required engineering purpose. In the southern Rajasthan stone mines at Aravalli range generating lacs of MT of waste causing threat to the environment, on the other hand highly permeable desert sand in western Rajasthan is challenging to store the rainwater in water scarce underdeveloped rural areas. In this study, we used the waste of Kota stone to decrease the permeability of dune sand for increasing its water holding capacity and reducing irrigation requirements for crops. As per the data collected from the laboratory test results it is observed that by adding the Kota limestone waste dry powder in the locally available dune sand of western Rajasthan the permeability of the mix decreases significantly with increasing the proportion of the limestone powder. The testing were terminated for further study as the permeability of pure sand reduced to one third of its original value at 10% admixture and no constant pattern is observed in decrement. This study analysis only shows that the permeability of pure sand can be reduced significantly by using small amount of limestone powder. Further research is required for determining the factors by which the variation of reduction in coefficient of permeability gets affected. |