Curing
As you know, the concrete is a mixture of Cement : Sand : Aggregates, apart from these, the water plays major to mix above said materials.
Not only that, the water regulates the reaction process of concrete, and the chemical reaction process continuous for the period of 28 days (the time where we access the strength of concrete). And in the process of chemical reaction, the water present in the concrete may evaporate in the presence of heat (sunlight).
To avoid, the evaporation of water in concrete (which helps in chemical reaction of cement) water sprinkling, gunny bags or ponding will be done. In the process of curing, no water will mix or percolate in the concrete.
