Soil Stabilization of Clayey Soil using Coal Ash and Stone Dust

In India the soil mostly present is Clay, in which the construction of sub grade is problematic. In recent times the demands for sub grade materials has increased due to increased constructional activities in the road sector and due to paucity of available nearby lands to allow excavate fill materials for making sub grade. In this study Stone Dust and Coal Ash is mixed with Parent Soil in various percentage ( 3%, 6%, 9%, 12%, 15% and 18%). The main objective of this study is to evaluate shear strength characteristics, CBR and Unconfined Compression behaviour of untreated and stabilized soil with Stone Dust and Coal Ash. Based on the results obtained from Modified Proctor compaction test, the ideal MDD and OMC value used for further, unconfined compression and CBR tests. The present investigation has therefore been carried out with waste materials like Stone Dust (SD) and Coal Ash (CA) which was mixed with soil to study improvement of weak sub grade in terms of compaction and strength characteristics.