EFFECT OF FLY ASH ON MECHANICAL PROPERTIES OF M30 AND M60 GRADE CONCRETE

Concrete is one of the highest consumed primary construction material in the world with a vital role in the construction field. Production of one ton of cement produces nearly one ton of CO2 causing environmental problems. So there is a need to reduce cement production and use some additives to make concrete sustainable. Due to growing environmental awareness, there is an increasing interest in the use of fly ash. It can be used either as an admixture or as partial replacement of cement or as partial replacement of fine aggregate and also as supplementary addition to achieve different properties of concrete. This paper presents the experimental investigations on the effect of fly ash content on compressive strength of M60 and M30 grades of concrete at an age of 7, 28, 56 and 91 days.