Compositions of Concrete
Concrete is a composite material prepared by mixing binder, aggregate, water and admixtures in specified portions to gain a particular strength. There are two different methods through which composition percentages are decided, Nominal mix design and design mix design. These methods are framed after multiple laboratory experiments and theoretical studies. Basis for calculation in both the methods remains mostly same as strength of concrete. These parameters are fixed in the beginning and proportions are calculated considering through suitable methods. Concretes are divided into multiple types based on their Compressive strengths and denoted as M25, M30 etc. M 25 represents concrete type with 25 MPA of compressive strength commercial architects in bhubaneswar . In the nominal mix concrete , all the ingredients and their proportions are prescribed in the standard specifications. The mix proportions like 1:1.5:3, 1:2:4, 1:3:6 etc. (cement: fine aggregate: coarse aggregate) are adopted in ...