what is concrete

Answer Posted / jambu

Concrete is the most widely used man-made construction
material. It is obtained by mixing cement, water, aggregates
(Fine and Coarse) and sometimes admixtures (Mineral and
Chemical) in required proportions.
The mixture when placed in forms and allowed to set becomes
hard like
stone. The hardening is caused by chemical action between
cement and
the water. In a concrete mix the cement and water form a
paste called
cement water paste which in addition to filling the voids of
fine aggregate
act as a binder on hardening.

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