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Infrastructure projects such as highways, railways embankments etc. require large quantities of soils for their construction. Structures like these located in expansive soil areas needs special attention and for the use of local materials. In this aspect use of stabilized materials gives are alternative solutions. Fly ash one such material and  can be mixed with expansive soils can be used as geotechnical material. Fly ash is an industrial waste obtained from thermal power plants by burning of coal.  In this an attempt is made for the utilization of Fly ash with cement in bulk quantities by adding these to expansive soil and tests like plasticity, swell potential, permeability and UCS were performed. From the test results it is identified that addition of Fly ash and cement decreases plasticity and improves strength characteristics. Addition of Fly ash-cement attain high compressive strength values of 2.55-3.72kPa and improves the seepage characteristics

STRENGTH, SWELL AND SEEPAGE CHARACTERSTICS OF FLYASH AND CEMENT MODIFIED BLACK COTTON SOIL