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 .


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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