International Journal of Advanced Technology in Civil Engineering


The effects of coal bottom ash as fine aggregates in place of sand was used and compressive strength, split tensile strength, flexural strength, Modulus of Elasticity, Density and water permeability are studied. The natural sand was replaced with coal bottom ash by 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100% by weight, as water absorption of bottom ash was more so that quantity of water was increased to achieve 100 mm slump. The results shows that the compressive strength, split tensile strength and flexural strength decreased as the percentage of replacement coal bottom ash increased as compared to controlled concrete. In this work slump was kept constant 100 ± 10 mm. To achieve the required slump water quantity was increased as percentage replacement increased. It was observed that up to 30% replacement the results of compressive, flexural, split and water permeability test are approximately same as that of the controlled concrete.



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