Answer / deepak

m20 grade is 1;1.5;3
m30 & m40 grade is mix degisn

Answer / ranjithkumar t

M5 - 1:5:10
M7:5 - 1:4:8
M10 - 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
M25 - 1:1:2
M30 - only design mix
M40 - only design mix

Answer / pramod kumar singh

M20-1:1.5:3
M30-DESIGN MIX
M40-DESIGN MIX

Answer / prabhu

m20 1:1.5:3

m30 1:1:2

m40 design mix

Answer / murali

M 20 1:2:4
M 25 1:1.5:3
m 30& M 40 DESIGN MIX

Answer / muruganantham

mix desing only

Answer / gaurav sharma

1:1.5:3
1:1.5:3
1:1:2

Answer / rvsmani

M 35 ---1:1.6:2.907

Answer / naveed

1:2:4
1:1.5:3
1:1:2

Answer / pk

124

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