Short video. RMC Concrete Work with Crane.
Short video.
The raw materials required for the preparation of RMC are coarse aggregate, fine aggregate (river sand/ m-sand), Cement/fly ash and Water.
The m20 concrete ratio is a nominal mix grade used for constructing support structures. The minimum strength that concrete must possess after 28 days of construction when quality control is carried out properly, is referred to as the grade of concrete.
Nominal mixes for grades of concrete such as M15, M20, M25 are generally used for small scale construction. Large structures have high strength requirements, thus they go for higher grades of concrete such as M30 and above. The mix proportions of these concretes are based on mix design.