Abstract
The best way to dispose any waste material (fly ash) is to use it as one or the other forms like construction material. In developed countries electrostatic precipitators collects fly ash, which leads to greater fineness. Hence it shows good pozzolonic activity. So it can be used as part replacement of cement. The effective utilization of fly ash in any field is possible only when a study of physical, chemical and mineralogical properties of the particular fly ash available is done. The properties will vary from plant to plant and with in a plant the source of collection. It was decided to use the fly ash of Raichur thermal power station in Karnataka in the present work. The concrete mix was prepared using IS 10262:2009. Compressive strength studies were planned to correlate the effect of the different characteristics of supplementary cementitious materials for various mix proportion for different replacement levels. Raichur fly ash (Class F) and Ground granulated blast furnace slag (GGBS) are used as part replacement of cement at various levels. Supplementary cementitious materials are replaced for various levels from 10 to 70 % for constant workability of 100 mm slump and by varying superplasticiser dosage. Drability of concrete is monitored against resistance to acid attack for various concentrations.
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