What is the proportioning by weight of 1:2:3 concrete mix
design of cement, sand, gravel, and water in metric for a 3000
PSI concrete strength and a target slump of 75-100mm?

Answer Posted / rajesh.d.v.s.p.

3000psi means M20 grade concrete
the ratio of m20 concrete is 1:1.5:3

total volume=1+1.5+3=5.5
total volume ingredients for using =1.57
Volume of broken stone Require = (3/5.5) x 1.57 = 0.856 m3
Volume of sand Require = (1.5/5.5) x 1.57 = 0.471 m3
Volume of cement = (1/5.5) x 1.57 = 0.285 m3
= 0.285 x1440 = 411 kg
For 1m3 of M20 (1:1.5:3)
Broken stone = 0.856 m3
Sand = 0.472 m3
Cement = 8.22 bag

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