M20 Grade ratio?
M30 Grade ratio?
M40 Grade ratio ?
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Answer Posted / mahendra mohan srivastava
Two tye of mix
1- Nomilal mix
2- Desigen mis
BIS dos not permit that we assume above M25
If we want M25. code suggest us we should go for design mix.
M20 is 1:1.5:3
M25 is 1:1:2
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