How much water is needed for M250 concrete to achieve strength?

Dnyan Deshmukh

Staff member
In general a concrete requires to have 200 to 250 liters of water to get the desired workability.
When a water to cement ration increases the strength of the concrete decreases.

To get the desired strength and workability, admixtures are added into concrete which reduces the requirement of water to concrete without reducing the desired workability.

There is wide range of admixtures available in market which reduces water cement ration and some also contribute in strength gaining process of concrete.

I think the water cement ratio for M250 would be less than 0.18 and do requires high range water reducing admixtures.

Unless you make a trials of concrete by designing it and using various admixture available in market, you may not able to arrive at required water quantity for same.

When we go for a very high range of concrete grades, admixture compatibility with brand of cement used plays very high role due to low water cement ratio.