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what are IS code for
M20, 25, etc
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Answer Posted / narayana
As per IS the mix of conc. shoud be mix for M20,1:1.5:3
ratio and for M25-1:1:2 ratio by design mix and after 28
days compressive strength should be more than 20N/mm2 for
M20 & 25N/mm2 for M25
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