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Question


What is the quantity of cement, sand, and gravel to be used 
in M20 grade of concrete for 1000 x 1000 x 1000 mm of sand 
(for cement please mention in kilos, and for sand and 
gravel please mention it in CFT)
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
1000mmx1000mmx1000mm =1 mx1mx1m = 1cum ok
M20 Grade =1:11/2:3
summation of proportion=1+1.5+3=5.5
1.54cum of dry materials of concrete will yield only 1 cum
concrete after adding water.
1cum x1.54/5.5= 0.28 cum
so cement=0.28cum= 0.28/.0347=8.07 bags=403.5 kg
sand=4.2cum=15.036cft
aggregate=8.4cum=30.072cft
 
Is This Answer Correct ?    37 Yes 10 No
Guruprasad
 
Answer
# 2
1000mmx1000mmx1000mm =1 mx1mx1m = 1cum ok
M20 Grade =1:11/2:3
summation of proportion=1+1.5+3=5.5
1.54cum of dry materials of concrete will yield only 1 cum
concrete after adding water.
1cum x1.54/5.5= 0.28 cum
so cement=0.28cum= 0.28/.0347=8.07 bags=403.5 kg
sand=0.42cum= 14.82 cft
aggregate=0.84cum= 29.65 cft
 
Is This Answer Correct ?    24 Yes 6 No
Rajendra
 
 
 
Answer
# 3
1000mmx1000mmx1000mm =1 mx1mx1m = 1cum ok
M20 Grade =1:1.5:3
summation of proportion=1+1.5+3=5.5
1.54cum of dry materials of concrete will yield only 1 cum
concrete after adding water.So the constant is 1.54
Quantity of cement for 1m3=1 x1/5.5x1.54 = 0.28 cum
1m3 cement=1440kg. So cement for 1m3=0.28x1440=403.2 kg
sand=easy method=1.5xcement=1.5x0.28=0.42 m3x35.313=14.83cft
or sand=1x1.5/5.5x1.54=0.42 m3x35.313=14.83 cft
Coarse aggregate = 3xcement or 2xsand=(3x0.28) or (2x0.42)
=0.84cum x 35.313 = 29.66 cft
or coarse aggregate= 1x3/5.5x1.54=0.84 m3x35.313=29.66 cft
 
Is This Answer Correct ?    15 Yes 5 No
Reethesh.m.p.
 
Answer
# 4
what is .0347 ????

is it constant
 
Is This Answer Correct ?    7 Yes 7 No
Atish Kumar
 
Answer
# 5
Correction in Question we made:
What is the quantity of cement, sand, and gravel to be used
in M20 grade of concrete for 1000 x 1000 x 1000 mm.
(for cement please mention in kilos, and for sand and
gravel please mention it in CFT)

1000mmx1000mmx1000mm =1 mx1mx1m = 1cum ok
M20 Grade =1:1 1/2:3
summation of proportion=1+1.5+3=5.5
1.54cum of dry materials of concrete will yield only 1 cum
concrete after adding water.
1cum x1.54/5.5= 0.28 cum
so cement = 0.28cum x 1440 = 403.5 kg
sand = 0.42cum x 10.47 = 4.40 cft
aggregate = 0.84cum x 10.47 = 8.80 cft
 
Is This Answer Correct ?    3 Yes 9 No
K.raja
 
Answer
# 6
1000mmx1000mmx1000mm =1 mx1mx1m = 1cum ok
M20 Grade =1:11/2:3
summation of proportion=1+1.5+3=5.5
1cum x15.4/5.5= 2.8 cum
so cement=2.8cum= 2.8/.0347=80.7 bags=4035 kg
sand=4.2cum=150.36cft
aggregate=8.4cum=300.72cft
 
Is This Answer Correct ?    17 Yes 42 No
Sjtbehera
 

 
 
 
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