EFFECT OF WATER-CEMENT RATIO ON CONCRETE | LCETED | CIVILENGINEERING

 

WHAT IS WATER CEMENT RATIO?

The water-cement ratio is the ratio of the weight of water to the weight of cement used in the concrete mix. A lower ratio leads to greater strength and durability, but the mixture may be harder to work with and build. Using plasticizers or superplasticizers can solve the problem.

 

EFFECT OF WATER-CEMENT RATIO ON CONCRETE

A lower ratio leads to greater strength and durability, but the mixture maybe harder to work with and build. Work efficiency can be solved using plasticizers or superplasticizers.

However, a mixture with a ratio of 0.35 may not mix completely and should not flow sufficiently to keep. Therefore more water is used than is technically necessary to react with the cement. Water-cement ratios ranging from 0.45 to 0.60 are commonly used. For high-strength concrete, lower ratios are used, and a plasticizer increases the flow.

 

Excess water will separate the sand and aggregate components from the cement paste. Furthermore, water that is not consumed by the hydration reaction may harden as the concrete exits, resulting in microscopic pores (bleeding) reducing the final strength of the concrete. When mixed with excess water the excess water will experience more shrinkage as the leaves, resulting in internal cracks and visible bone fractures (especially within the corners), which in turn will reduce the final strength.

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