# Details method to determine the water cement ratio in concrete In this construction video tutorial, you will learn the tips to work out proportion of water & cement in concrete.

In civil engineering term, water cement ratio signifies the ratio among the weight of water to the weight of cement that is applied in concrete mix. Alternatively, it means the amount of water to be utilized in the cement concrete.

The water cement ratio provides a great impact on the strength of concrete. If less amount of water is employed for cement concrete, the strength of the concrete will be better.

If the water is not utilized in cement concrete, the concrete fails to blend. So, water is considered as a major component for cement concrete to associate all the material with each other for maintaining the superior strength of any construction work.

Generally, the water cement ratio remains at under 0.4 to 06 according to IS Code 10262 (2009) toward nominal mix M7.5, M10, M15, M20 and M25.

To determine how much water is required in one bag cement, the following process has to be followed :-

It is known that the weight of concrete in 1 meter cube = 1440 Kg/m3
1 bag cement = 50 Kg

Now, determine the quantity of cement in cubic meter in one bag cement as follow :-

1 bag of cement = 50/1440 = 0.03472 m3 (1440 = density of cement)
Suppose, 1 bag cement = 35 litre
Now, water cement ratio (w/c) is taken as 0.5

Therefore, water = cement x 0.5
W = 35 x 0.5 = 17.5 liter water/bag.

To get more details, watch the following video tutorial.

Video Source: Tutorials Tips