Answer Posted / akashkhutia

For 1 m3 of concrete (1:2:4)
Required volume of concrete = 1 m3
Estimated volume of dry material = 1 x 1.65 = 1.65 m3
Mix totals = 1+2+4 = 7 (1:2:4 cement:sand:gravel)
Ingredient Volumes: 1.65 x 1/7 = 0.235 m3 cement

# Bags of cement: 0.235 m3 cement / .0332 m3 per 50 Kg bag
= 7 bags of cement

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