Geotechnical Properties of Fly Ash and Bottom Ash Mixtures in Different Proportions

Kumar, Dilip and Kumar, Neetesh and Gupta, Ashish (2020) Geotechnical Properties of Fly Ash and Bottom Ash Mixtures in Different Proportions. Geotechnical Properties of Fly Ash and Bottom Ash Mixtures in Different Proportions, 3 (9). pp. 1487-1494. ISSN 2319-7064

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Abstract

Fly ash is very effectively used in various civil engineering projects. Fly ash is a by-product recovered from the flue gases of coal combustion plant. The quantity of ash produced depends upon the quality of coal and the method of burning. In India less than 20% of ash is used in the manufacture of brick, cement, concrete and other product. Bottom ash is a by-product of burning coal at thermal power plants. Bottom ash particles are much coarser than the fly ash. Here we are using different proportion as 100% BA, 80%BA+20%FA, 60%BA+40%FA, 40%BA+60%FA, 20%BA+80%FA, 100% FA. Different test like Grain size analysis Specific gravity, Standard proctor test, Permeability test, direct shear test, California Bearing Ratio test were done on different proportions. MDD increases while dry density decreases as bottom ash increases. Permeability decreases as fly ash content increases. CBR value decreases for both soaked and unsoaked condition as fly ash content increases.

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