Study on High Volume Fly Ash Concrete

Fly ash is finely divided residue resulting from the combustion of powered coal and transported by the flue gases and collected by electrostatic precipitator. There are multiple benefits for the sustainable development of the construction industry by using fly ash to increase the strength characteristics of structural members. The objective of the present investigation is to study the mechanical strength behavior of High Volume Fly ash concrete. In this study the mechanical properties are studied with various replacements with cement like 0%, 0%,40% and 50% of Fly ash. % saves the higher compressive strength. When compared with control mix the strength of HVFA concrete reduced % for 0%, 0%,40% and 50% at 7, 28 & 180 days respectively. Mineral admixtures generally used are raw fly ash, rice husk ash, silica fume etc. Addition of such materials improves the concrete property. Fly ash is finely divided residue resulting from the combustion of powered coal and transported by the flue gases and collected by electrostatic precipitator. There are multiple benefits for the sustainable development of the construction industry by using fly ash to increase the strength characteristics of structural members. Fly ash reacts with calcium hydroxide, a byproduct of the hydration of Portland cement.