Explain the Water to Cement ratio effect on the Compressive Strength of Concrete Cylinders. What is...

Explain the Water to Cement ratio effect on the Compressive Strength of Concrete Cylinders. What is the normal range of the Water to Cement ratio utilized in a concrete mix design?

Expert Solution

Water cement ratio : The ratio b/w weight of water to weight of cement in th concrete mix.
Effect of w/c ratio on compressive strength of concrete cylinders:
Higher the water cement ratio lower is the compressive strength of concrete
Not only lowering the compressive strength as the water cement ratio increases mix gets loose and difficult to attain the cylinder shape.
Higher water cement ratio also results in shrinkage in turn shrinkage reduces strength.
On the other hand lower is the water cement ratio higher will be the compressive strength of concrete.
But workability decreases as water content decreases ,it becomes difficult to work
To balance all the following factors normal range of water cement ratio is 0.45 - 0.6
Though it is the general range this range may vary depending on climatic conditions,mode of application,structure for which it is applied
For example during hot conditions as evaporation will be more, slight high water cement ratio is preferred.

Ally Wells answered 8 months ago

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