M25 mix has a ratio of 1 cement to 1 sand and 2 stone jelly.i.e 1:1:2. This means cement volume is half of stone jelly volume.To prepare 1cu.m of concrete we need 0.0 cu.m of jelly. Answer / subilash .s (civil engineer) for designing 1m3 concrete of M25 mix the ratio is 1:1:2 for calculating cement,sand and course aggregate , cement= 1/ (1+1+2)=.25 density of cement =1440kg/m3 cement required for this mix=1440".25=360kg=6bags+10kg sand=1/4=.25m3 course aggregate=1-.5=.5m3 this methode of designing is known as volume ... What is the difference between M20 and M25 concrete ?What is the requirement for over all CG of DG from the foundation surface to absorb the vibration of heavy set. , , What is the difference between M20 and M25 concrete ?Answer / errakesh Biggest diffrent between M20and M25 Ratio of M20 is 1:1.5:3 It is use for water retaining structure piles. & M25 Ratio is 1:1:2, it is use for havey construction like as Havey lodaded R.c.c column Thanks Rakesh
