what is nominal mix concrete and mix design?

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Accepted Answer

Nominal mix concrete is a simple type of concrete mix that is done by using the volume method without any detailed calculations.

Nominal mix concrete is done by using approximate proportions of ingredients without any detailed calculations.
It is commonly used for small construction projects where high strength is not required.
Mix design involves calculating the proportions of ingredients based on the desired strength and durability of concrete.
Mix design considers factors like water-cement ratio, workability, and strength requirements.
Mix design is more precise and ensures the desired properties of concrete are achieved.
For example, a mix design for M20 grade concrete would specify the exact proportions of cement, sand, and aggregate to achieve the desired strength.

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