Answer / sheshkant

its depend on the concrete mix design.

Answer / raju gohel

m 20 rcc 7.89 bags proportion 1-1.5-3
PCC 3.4 bags proportion 1-4-8

Answer / sandesh parab

simple method
calculation for m20 for /1 m3
1.51 is Bulk Density and Specific Gravity cement powder.
1.54*1/1+ 1.5 + 3(cement+sand+agg.) =0.2745,
0.2745/0.035 =7.84 say 8 bags.

same calculation try for m10,15,25,30

Answer / praveen kumar

STANDARD CEMENT CONSUMPTION
REINFORCED CEMENT CONCRETE
Cement concrete M-15 (1:2:4) Cum. 5.90
Cement concrete M-20 (1:11/2:3) Cum. 6.90
Cement concrete M -25 Cum. 8.50
Cement concrete M-30 Cum. 9.20
Cement concrete M-35 Cum 10.20

Answer / 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

Answer / s c jayakumar

I general to calculate weight of cement you need to know
the ratio.Once ratio is known to you the you can calculate
by using this simple formulae

1.52 / Mix proportion will give you weight of cement per
cum from this you calculate weight of cement in kg(1 Cum =
1440 kg)

Ex(for 1:2:4, 1.52/(1+2+4)=0.1428 cum or 205 kg.

Answer / puneet

SC Jayakumar u hav dne wrong calculation.plz check it
out..............the weight of cement is coming out to be
312.68 Kg.

Answer / rajib pathak

HOW TO CONVERT CUMIC METER INTO M.SUPPOSE 8 CUBIC METER OF RCC COST YOU Rs 2400.so how much im cost?

Answer / sandra sridhar

1:2:4
1+2+4=7 =1
1/7=.142
.142*31kg=4.428
4.428*1.54=6.819 say 6.8 bags

Answer / dhavaljit rathod

BULK DENSITY (SPECIFIC GRAVITY) OF CEMENT = 1.52
BULK DENSITY (SPECIFIC GRAVITY) OF 40mm AGG. = 1.57
BULK DENSITY (SPECIFIC GRAVITY) OF 20mm AGG. = 1.54

M 20 = 1 : 1.5 : 3
HENCE, (1+1.5+3) = 5.5 (Total MIX)
FOR CEMENT CONSUMPTION,

(1/5.5)X 1.52 x 1440 = 397.87 kg (where, 1 CUM = 1440 kg,
and 1.52=Cement Sp.Gr.)
SAY = 400 kg
BAGS = 400/50 = 8 nos.

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