Short Notes on Water cement Ratio

Water Cement ratio :-

 Water has two functions in a concrete mix. It enables the chemical reactions, which cause setting and hardening of cement. It lubricates the dry concrete in order to facilitate placing. If less quantity of water is added concrete will not be workable whilst excess amount of water if added it may flow by reducing quantity of cement and consequently will reduce the strength of concrete. Dense and strong concrete can be obtained by using specific quantity of water consistent with the degree workability required to give maximum density. Thus a specific ratio of volume of water to the volume of cement is required. At this ratio concrete is found more strong and durable. This ratio is called water cement ratio and denoted as W/C ratio.