Answer / n p kulkarni

Suppose Concrete Grade is M15 i.e. 1:2:4,Then For
calculating the cement, sand & agg,You Have to add 50% as
Bulkage(i.e Wet Volume)
Then For 10 Cum qty.
Add 50% in This Qty
Total Qty =10+(10*50%)=15 Cum.
=15/(1+2+4)= 2.14(This Is a constant)
For Cement = 2.14 x 1 x 28.8=60.51 bags(Say 61 bags for 10 Cum)
(28.8 is wt of one bag in cum is 1440/50)
1440 is dencity of cement in Kg/Cum.& 50 is wt of one bag In Kg.
For Sand = 2.14 x 2 =4.28 Cum Sand.
For Agg = 2.14 x 4 =8.56 Cum Aggrete

Answer / md umar

first of all any concrete mix design should be grade design
not define here .suppose ratio of concrete 1:1:2 (M25)for
calculate cement sand cource agregate .15.2/1+1+2 for 10m3
calculation of cement 15.2/1+1+2
15.2/4 or 0.37 cum
sand 0.37
cource aggragate 0.37*2 0.70 com

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