Fly ash - An emerging alternative building material

Abstract

Fly ash is produced by thermal power plants while generating electricity by burning pulverised coal and is a waste material . In India , the avialability of fly ash is substantial since the Indian coal contains as high as 40% ash much higher than the other countries . The disposal of this waste material is a matter of great concern from the environmental and ecological point of view. The safest and gainful utilisation of this material has been one of the topics of research over the last few decades. This paper is aimed to highlight the various applications of fly ash as building material such as lime / clay flyash bricks, Portland Pozzolana Cement, light weight aggregates replacing the conventional building material to some extent.