Fly ash is a by-product obtained during burning of coal in power plants. It is estimated that about 600 million tons of fly ash is annually produced worldwide and its accumulation in the vicinity of power plants causes severe pollution problems. Globally, its disposal is an environmental challenge, and the only practical solution for its mass disposal is its use in the construction industry, in particular for brick production. In India, coal-based power plants dominate the power sector, thus recent times saw substantial growth in masonry structures via fly ash bricks. The performance of a masonry structure is dependent upon the characteristics of the bricks along with several other factors. Therefore, proper evaluation of fly ash brick characteristics is crucial for quality masonry construction. In this research paper, light-weight bricks are designed and produced out of spherical fly ash particles and lime. The absorption coefficient, shape and size, density, weight and compressive strength of fly ash bricks are evaluated. The particles of fly ash utilized as additive to the bricks production led to considerable enhancement in their durability and a reduction in the density. It can be concluded from the present study, that fly ash bricks are excellent alternative to traditional bricks.

Fly Ash, Compressive Strength, Density, Absorption Coefficient