Grad of concrete , cement,sand , compaction

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The gradation of concrete refers to the proportions of cement, sand, and aggregate used in the mixture, while compaction is the process of reducing air voids in the concrete.

The gradation of concrete is determined by the desired strength and workability of the mixture.
Common gradations include 1:2:4 (cement:sand:aggregate) for general use and 1:1.5:3 for reinforced concrete.
Compaction is achieved through the use of mechanical vibrators or manual tamping to remove air voids and improve the density of the concrete.
Proper compaction ensures the strength, durability, and resistance to cracking of the concrete.
The compaction process should be carried out at the right moisture content to avoid segregation or excessive bleeding of the mixture.

Grad of concrete , cement,sand , compaction

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