Cement concrete plasticizers increases the workability of freshly mixed concrete without increasing the water cement ratio.
Cement plasticizers are chemicals to be added in cement – concrete mixture. It is to be added in proportion of 0.1% to 0.4% by wt. of cement.
It means in 50 Kg of cement bag, 250 gm to 400 gm of chemical has to be add. Addition of these doses reduces 5% to 15% of water requirement in the concrete mix with constant workability.
These are also known as super plasticizers; it delays the process of surface hydration of cement. It does not impart air inside concrete. It is very much responsible for strength gain and improves workability.