HOW TO CALCULATE QUANTITY OF CEMENT, SAND AND COARSE AGGREGATE IN CONCRETE.
WET VOLUME OF CEMENT = 1 CUM
DRY VOLUME = 54% INCREASE
BY WET VOLUME = 100+54 =154
= 154/100=1.54
DRY VOLUME = 1.54 X WET VOLUME
MIX DESIGN
CONSIDER M15 GRADE ( 1:2:4) (C:S:A)
CONSIDER VOLUME = 1 CUM
M15 GRADE ( 1:2:4 )
TOTAL MIX ( 1:2:4 ) = 1+2+4 = 7
DRY VOLUME = 1.54X1 =1.54 CUM
CEMENT
( DRY VOLUME x C ) / TOTAL MIX
(1.54 X 1 )/7 = 0.22 CUM
QUANTITY OF CEMENT x DENSITY OF CEMENT
( IN KGs 0.22 x 1440 = 316.8 kg )
SAND
( 1.54 x 2 )/7 = .44 cum
in kgs
0.44 x 1500 = 660 kg
COARSE AGGREGATES
( 1.54 x 4 )/7 = .88 cum
in kgs
0.88 x 1500= 1320 kg
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