A REVIEW PAPER ON CONCRETE MIX DESIGN OF M20 CONCRETE

Abstract

The concrete is the most commonconstruction material. Generally, it produced by using cement, sand, aggregate and water it's act as binding material in the whole construction world.  The ingredients are used as per designedproportion, termed as nominal mix or design mix concrete. In the nominal mix concrete, the properties ofingredients are not considered and same is limited uptoM20 grade only. For the present work, 53 gradeordinary Portland cement (OPC) was used in nominalmixed and design mixed M20 grade concrete and requiredcement content is compared.By using 20 mm size the graded angular aggregate and the river sand, the nominal mix concrete (1.0 : 1.5 : 3.0) is prepared. The density and cement content of fresh concrete were 24.46 KN/m3 and 395.83 kg/m3 respectively. By using the same ingredients, the nominal mix concrete is prepared using the ratio given in IS 456: 2000 table – 9 and the cement content is found 366.30 kg/m3. Nominal mix M20 grade fresh concrete was again prepared by using 20 mm size angular coarse aggregate and cement content was obtained as 366.52 kg/m3.Design mix proportions were calculated by using and 53 grade OPC with 20 mm size graded angular aggregate and river sand. The cement content is found 48.20 kg/m3 less for 53 gradeOPC and cement the saving is 4.08% over 43 grade cement and more for other grade cement.