A Study on Concrete with Partial Replacement of Cement with Silica Fume and Fine Aggregate with Bottom Ash

T Rukmangadha, PS Banu Priya, M S Yuvara .

Abstract


To safeguard the environment, efforts are being made for recycling the industrial wastes and utilise them in value added applications. Advances in solid waste management resulted in alternative construction materials as a substitute to traditional materials like aggregates, cement and etc., This paper reports the results of an experimental program to investigate the effect of using thermal power station bottom ash as a replacement of natural fine aggregate and silica fume as a partial replacement of cement.

In the present study concrete cubes with partial replacement of cement with silica fume (5%, 10% and 15%) were casted. Other concrete mixes with partial replacements of both cement and fine aggregate with silica fume and bottom ash respectively were casted, silica fume replacing cement by 5%, 10% and 15%, bottom ash with a constant replacement by 30% of fine aggregate. The mix design method adopted as per the IS 10262:2009. For each proportionate mix, cubes and cylinder specimens were casted and tested for compression, split tensile strength  as per IS code specification for 3, 7, 14, 28, 56 days.

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