PILOT STUDY PROJECT FOR IMPACT OF FLY ASH ON PROPERTIES OF EXPANSIVE SOIL

Civil Engineering

The Expansive soil is one which swells or strains excessively due to changes in moisture state and when associated with an engineering structures to experience either settlement or have depending on the stress level and the soil swelling pressure. Design and construction of civil engineering structure on and with expansive soil is a challenging task for geo technical engineers. The technique of improving the soil increases the strength and load carrying capacity of the soil through frictional interaction between the soil and the industrial waste. Improving black cotton soil or locally available weak soil by industrial waste is of great importance in the field of road construction. The well built and maintained roads plays measure role in the development of the nation. If the weak sub grade is improved, the crust thickness required will be less. Use of industrial waste in sub grade improvement techniques assumes a great promise and will be comparatively easier for construction. The main objective of this work is to study fly ash for soil stability. It is an attempt made to use the Industry waste product, which is available in various parts of India in huge amount. Stabilization of soil is an efficient method of improving the soil characteristics. In the laboratory tests are conducted on soil samples and industrial wastes Fly Ash. The soil is mixed with various proportions of Fly ash as 5%, 10%, 15%, 20% and 25%. The value of California bearing ratio of soil by addition of 15% fly ash is increased due to increase in density of modified soil mix, which leads to soil mask having more strength.

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