OPTIMIZATION OF AGGREGATE GRADATION AND ITS INFLUENCE ON PROPERTIES OF M20 GRADE CONCRETE BY USING M-SAND

T.Suresh
PG Student, Department of Civil Engineering & Annamacharya institute of technology and science, Tirupathi, , IN

P.Vijay kumar
PG Student, Department of Civil Engineering & Annamacharya institute of technology and science, Tirupathi, , IN

Dr.K. Narashimhulu
PG Student, Department of Civil Engineering & Annamacharya institute of technology and science, Tirupathi, , IN

Keywords: power curve, fineness of modulus, water absorption, compressive strength, Binding material

Abstract

The normal concrete having as a main constituent as aggregates because it occupying 70% of total volume of concrete. The aggregates are influence the concrete characteristics of fresh and hardened concrete. We use the binding material of the concrete is cement, which is taken up to 20% in the mixing of concrete. So due to the usage of high volume of cement, increases the cost of cubic unit of concrete. So in this reason we take a challenge to decrease the cost of concrete production by using optimization technique. In this technique we use combine gradation of aggregates, it will be reduce usage of cement in the production then decrease the cost of cubic unit of concrete. The optimization technique is obtained from maximum density line or power curve, coarseness factor chart, fineness of modulus and surface area. In this experiment uses to improve the arrangement of aggregate structure i.e, reduce the
gaps in the concrete structure. In this investigation, we know that it’s increases the density of concrete because of good packing arrangement of aggregates and also improve the characteristics of concrete like flow of concrete, water absorption, compressive strength.

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