EFFECT OF 30% FLY ASH AND 60% M SAND AS A REPLACEMENT ON THE M40 GRADE OF CONCRETE WITH THE ADDITION OF VARIATION IN STEEL FIBER

Abstract

In this present investigation continuous growth in the construction industry .The available source of natural fine aggregate are procured and it transferred to long distance which effect the construction cast, for this reason it is very much necessary to substitute in concrete by an material added partially ,without compromising the quality of concrete .fly ash & M sand are the one of the replacement of material for cement & natural sand respectively. This work aim is to using these partial replacement of materials like cement by fly ash and natural sand by M sand to study the strength of M40 grade of concrete and we added the steel fifer to the concrete. The tests are conducted to find out the strength of M40 grade of concrete with curing period 3,7,& 28 days of compressive strength ,split tensile strength & flexural strength . In this work we maintained the fly and M sand are kept constant 30% & 60% respectively and steel fibre are varied in the range from 0%,0.5%,1%,1.5%& 2%. And the water cement ratio is taken 0.4%. at the end of the optimum results are concluded at 30% of fly ash & 60% of M sand with 1% of steel fiber gives good strength increment in compressive strength ,split tensile strength & flexural strength at optimum mix.