Paper Details

Aggregate are the important constituent in concrete. They give body to concrete, reduce shrinkage and affecteconomy. Earlier, aggregates were considered chemically inert but now it has been recognized that some of the aggregate arechemically active and also certain aggregates exhibit chemical bond at the interface of aggregate and paste. The mere factthat they occupy 70-80% of volume of concrete, their impact on various characteristics of concrete is undoubtedlyconsiderable along with its gradation. The depth of range of studies that are required to be made in respect of aggregate tounderstand their widely varying effect and influence on properties of concrete such as compressive strength, durability,workability, shrinkage, density etc. cannot be underrated. The emphasis is given on the gradation and type of aggregatewhich influence the properties effectively. The grading curves are studied in detail to know the behavior of coarse as wellfine aggregate as properties of concrete. In this work, emphasis has been given to Gap grading which is a relatively new termas far as traditional methods of combining aggregates are concerned. Three different batches were cast, using Well graded,Uniformly graded & Gap graded aggregate sample in consecutive batch for M20 grade of concrete. Various tests were carriedout to evaluate the effect of grading of aggregate on the inherent properties of fresh and hardened concrete

Yogita Malewar, Shumaila Saleem, Jyoti Patel, “GAP GRADING OF AGGREGATES & ITS EFFECT ON THE INHERENT PROPERTIES OF CONCRETE”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 15, pp. -, January 2017.