Answer Posted / prabin j

Bulk density to 20mm aggregate =1.57
Bulk density to 40mm aggregate =1.52
U can calculate this method
M20 grade of concrete(1:11/2:3)
1(cement)/7(cement+sand+aggregate)X1.57(bulk density of 20mm aggregate)X1440=6.45 Bags
Same Caluculate to M10,15,25,30

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