Concrete mix proportions 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 :- 1:0.75:1.5( design mix) Join @Technical_civil 2.3K viewsedited 11:59