Project on Concrete Mix Design for various grades of Concrete

Mix Proportion by weight of M35 grade of concrete with fly ash is 1:2.08:2.72 and its water-cement ratio was found to be 0.4. Mix Proportion by weight of M50 grade of concrete without fly ash is 1:2.28:3.12 and its water-cement ratio was found to be 0.44.

= Fck +1.65 x S.D. Pc = Coarse Aggregate Content as percentage of total Aggregates. As the sand is of Zone II no adjustment is required for sand. From combined gradation of Coarse aggregates it has been found out that the proportion of 53:47 of 20 mm & 10 mm aggregates produces the best gradation as per IS: 383

A-4 SELECTION OF WATER•CEMENT RATIO

Adopted maximum water-cement ratio = 0.41.