Answer / devi singh

Propertion in M-20 is 1:1.5:3 and in M-25 is 1:1:2,M-30 is
based upon the disign.

Answer / chandu

M20 (1:1/2:3) M25(1:1:2) there is no proportion for M30 its
a rich design mix concrete only.

Answer / m.haseeb yaquobi

watter, cement, crushed stone meby addmixture

Answer / om prakash narayan

M-20 means lower grade use in slab casting

(1:1.5:3)
M-25(use in coulam casting - 1:1:1.5)
M-25(use in Raft and foundation use and mix Desgion not
1:1:1 ok
through Indian standard code IS:456

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