What is the difference between nominal mix and design mix?

Answer Posted / kundan kumar

NOMINAL MIX:
The wide use of concrete as construction material has led to the use of mixes of fixed proportion, which ensure adequate strength. These mixes are known as nominal mixes. Generally, nominal mix is expressed in terms of aggregate-cement ratio.
DESIGNED MIX:
It is the mix which ensure the concrete with the appropriate properties to be produced, most economically. Other factors like workability, durability, compaction and curing method adopted, etc, also influence the choice of the mix proportion. The mix proportion so arrived at is called the designed mix.

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