Concrete is the most widely used construction material and, for the most part, is produced using non-renewable natural resources and energy intensive processes which emit greenhouse gasses. With growing environmental consciousness at all levels of society, the pollution and health hazards are especially associated with the concrete, cement and clay-bricks industries, coming under intense scrutiny from environmentalists and the governments. The developed countries are farther ahead in tackling the problem by using industrial, construction & demolition waste and agricultural wastes in their industries.