Mechanical and Durability Properties of Concrete by Adding Bottom Ash as A Partial Replacement of Fine Aggregates

the natural resources of the sand are getting depleted gradually. Mining of sand also leads to various environmental hazards. The demand for the protection of the natural environment and the ban on mining in some areas is further aggravating the river sand. Bottom ash is a byproduct of composition of pulverized coal composed mainly of silica, alumina and iron with small amounts of calcium, magnesium sulphate. This paper presents the experimental investigation carried out to study the effect of use of coal bottom ash as a partial replacement of fine aggregate. An experimental program is planned in which controlled concrete of grade M30 is used. Fine aggregate is replaced with bottom ash by 10%, 20%, 30%, 40%, 50% and the properties like compressive strength, split tensile strength, flexural strength are evaluated. Test results show that bottom ash can be used as an effective replacement of fine aggregates. Workability decreases with the increase of bottom ash content. The compressive strength, tensile strength, flexural strength was effective up to 30% replacement level. Therefore 30% of the fine aggregates maybe replaced with bottom ash effectively.