how do we calculate the quantity cement,sand, & aggregate
for M20,M15 for 10cum.

Answer Posted / piyush singh

DIRECT ESTIMATION METHOD : =

M20 (1:1.5:3) for 10 m^3

1. cement content = 15.2 \ (1+1.5+3)
= 2.763 cum
= 82 bags of 50 kg

2. water = 2.763 cum * 1.5
3. ca + fa = 2.763 * 3 cum

* here 15.2 is a standard value worked out from experiments.
so for 10 m^3 u can divide the sum of ratio by 15.2 to get
amount of cement directly...

* 50 kg of cement (1 bag) = (1/30) m^3 so = 0.034 cum
2.763cum / 0.034 cum = 82 bags

similarly u can work it out for

M25 1:1:2
m15 1:2:4
m10 1:3:6

Is This Answer Correct ?    19 Yes 8 No



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