Answer / p.senthil nathan

M2o Grade - 1:1.5:3
M30 Grade& M40 Grade - Normaly We Used Disign Mix.

Answer / lakshmi

M7.5 - 1:4:8
M10 - 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
M25 - 1:1:2
M30 - design mix

Answer / p.sivakumar

M20-1:1:5:3,M30,40,Design mix

Answer / dinesh kumar.t

m20 grade -1:1.5:3
m30 grade -Design mix
m40 grade -Design mix

Answer / viji.n.b

M20 - 1:1.5:3
M30 Grade& M40 Grade - Normaly We Used Disign Mix.

Answer / pravin deshpande

Higher grade of concrete should be done only with Mix Design

Answer / teja singh

M15(1:2:4), M20(1:1.5:3), M25(1:1:2), M30 is design mix

Answer / partha mitra

M15 - 1:2:4
M20 - design mix as well as nominal mix,and the nominal
mix ratio is(1:1.5:3)
M25 - design mix as well as nominal mix,and the nominal
mix ratio is-(1:1:2)
M30 - design mix

Answer / shalu verma

THERE ARE TWO TYPES OF MIXES:-
1-NOMINAL MIX
2-DESIGN MIX

1-NOMINAL MIX < M30 -ITS ALSO CALLED NOMINAL CONCRETE
2-DESIGN MIX >= M30 - ITS ALSO CALLED CONTROLLED CONCRETE.


SO, M20 IS A NOMINAL MIX AND ITS RATIO IS 1:1.5:3 AND ITS
STRENGHT IS 20 N/MM2.

M30 & M40 ARE DESIGN MIX AND ITS HAS NOT ANY RATIO THESE
ARE MEASURED BY THERE STRENGHT WHICH ARE 30 N/MM2 AND
40 N/MM2 RESPECTIVLY.

Answer / natarajan k.s

1:2:4
Design mix
design mix

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