Compaction, Finishing and Curing
Concrete shall be compacted using mechanical vibrator complying with IS: 2505, IS 2506, IS 2514 and IS 4656. Finishing should be done after a little stiffening of concrete.Exposed surface of concrete shall be kept continuously in a wet condition by ponding or by covering with a layer of sacking, canvas , etc. It should be kept constantly wet for at least seven days from the day of placing concrete in case of ordinary Portland cement and at least 14 days where mineral admixtures or blended cements are used.
It is essential to use proper and adequate curing techniques to reduce the permeability of the concrete and enhance its durability by extending the hydration of cement, particularly in its surface zone.
