In making concrete maximum density is achieved by
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Answer:
Proportioning of concrete is the process of selecting quantity of cement, sand, coarse aggregate and water in concrete to obtain desired strength and quality.
The proportions of coarse aggregate, cement and water should be such that the resulting concrete has the following properties:
When concrete is fresh, it should have enough workability so that it can be placed in the formwork economically.
The concrete must possess maximum density or in the other words, it should be strongest and most water-tight.
The cost of materials and labour required to form concrete should be minimum.
The determination of the proportions of cement, aggregates and water to obtain the required strengths shall be made as follows:
a) By designing the concrete mix, such concrete shall be called design mix concrete, or
b) By adopting nominal mix, such concrete shall be called nominal mix concrete.