INFLUENCE OF DIFFERENT WASTES ON CONSOLIDATION CHARACTERISTICS OF EXPANSIVE SOILS

Civil Engineering

Expansive Soils covers 20% area of India. Black cotton soils have expansive nature. Expansive Soils swells when water is added to it and when water evaporated from it, it shrinks. This study represents consolidation parameters (Cc, Cv, av, mv, change in void ratio) of Black cotton soil stabilized with three waste materials as additive: Brick Dust, Gypsum, and Fly Ash. Soil is mixed with 2.5%, 5%, 7.5%, 10%, 12.5%, 15%, 17.5% and 20% of Brick dust, Gypsum and Fly Ash respectively. Comparison of Change in Consolidation Parameters with virgin soil and with change in percentage was shown. Samples were prepared at Optimum Moisture Content and Maximum Dry Density by standard proctor test. After that Conventional Consolidation tests were performed by applying seating load of 0.05 kg/cm2 and then load increment is doubled after 24 hours up to 6.4 kg/cm2. Total 25 tests were carried out. Results shown that consolidation characteristics were decreases with increasing percentage of additive.

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