Shear strength behaviour of mining sand treated with clay and hydrated lime

The purpose of this study is to investigate the effect of hydrated lime in clean sand and sand-clay specimens. In order to illustrate the improvement of shear strength behaviour of soil by hydrated lime addition, kaolin clay at different percentages is added in soil specimens containing mining sand with 5% of hydrated lime because lime reacts well with clayey soil. It is observed that lime reacts with clay by increasing the strength of clayey soil. Lime appears to have little influence on clean mining sand and soil specimens containing less than 10% of kaolin clay. It is interesting to note that 30% clay content in treated (5% hydrated lime) soil specimen is needed to increase the deviator stress of soil as compared to untreated soil specimen with the same clay content.