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Question
how do we calculate quantity of cement , sand and 
aggregates in 1 m3 of M30 grade concrete ?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
take the ratio 1:1.5:3
cement =1
sand =1.5
metal =3
So what is the ratio we want to mixing 1+1.5+3=5.5
Volum of wet cement concret is 1.54 to 1.57
unit weight of cement bag is 1440 kg/cum
one bag of cement = 50/1440 = 0.034722 cum

SOLUTION : CEMENT = 1.54/5.5 =0.28
=0.28/0.0347 = 8.069 ( 8 bags)
one bag of cement =50 kg X 8.069 = 403.45 kgs.

SAND solution =0.28 X 1.5 = 0.42 Cum
1.5 is the mixing proportion
METAL SOLUTION = 0.28 x 3 = 0.84 cUM.
3 is the mixing proportion
1 Cum cement concrete is 1:1.5:3 ratio

cement = 403.45 kgs.
sand = 0.42 Cum.
metal = 0.84 Cum.
 
Is This Answer Correct ?    222 Yes 41 No
Ranga
 
Answer
# 2
M30- cement=1/4*1.54=0.385*28.8=11bags
sand-0.385*1=0.385cum
agregate 0.385*2=0.77cum

Notes;why we multiply by 1.54
dry dencity=1.54*wet denciti in conct.work
 
Is This Answer Correct ?    147 Yes 57 No
Sachdeva D.p
 
 
 
Answer
# 3
1:1:2 
Is This Answer Correct ?    191 Yes 121 No
Ratul
 
Answer
# 4
The approach by Sjtbehera is totally correct but has some
little silly mistakes...I have tried to give a rectified
solution.

In the case M30 design mix, the quantities of cement,sand
and aggregates cannot be calculated as it is a variable
quantity.It depends upon the Mix designer how much quantity
of cement,sand and aggregates he will employ.His only
intention would be to design a mix whose specified
characteristic compressive strength at 28 days=30 N/sq.mm
But in case of nominal mix we can use 1:1:2
Let us consider a volume of 10 cu. m (Wet concrete)

It is difficult to access exactly the amount of each
material required to produce 10 cu m of wet concrete when
deposited in place.
Hence to convert the wet volume into dry volume,
Increase by 54 % to account for shrinkage and wastage

Thus it becomes=15.4 cu. m (Variable upto 15.70)

Calculating cement, sand and aggregates in the mix:
Total summation of proportion=1+1+2=4

Cement = 15.4/4= 3.85 cu. m =3.85/0.0347=110 bags
Sand=15.4/4=3.85 cu. m
Aggregates(20mm to 6mm)=15.4 x (2/4)=7.70 cum

Hope u have understood and the mistake is clarified!!!
 
Is This Answer Correct ?    85 Yes 27 No
Rajarshi Basu
 
Answer
# 5
Take the retio 1:1.5:3
Cement = 1
Sand = 1.5
Aggregates = 3
The volume of none mixed material is 1.52 m3 for one cu.m
mexid concret becouse the the aggregate sand and cement
have porosity that will fill with some of sand and
cement,so 1.52/(1+1.5+3)=1.52/5.5=0.276
Cement=0.276*1=0.276 cu.m = 0.276/0.036*50 bag = 383kg
0.036 is one bag volume
Sand = 0.276*1.5 = 0.414 cu.m
Aggregate = 0.276*3 = 0.828 cu.m
0.276+0.414+0.828=1.518 near to 1.52
 
Is This Answer Correct ?    16 Yes 2 No
Enayatullah
 
Answer
# 6
Take a Ratio 1:1.5:3
Now 1+1.5+3= 5.5
Now Divide This By 1.52 Which Is wet Volume
Now 1.52/5.5 =0.276
Now Multiply This by 30 Coz 1 Cum Of Cement Contains 30
bags dry.
==> 0.276 X 30 = 8.29 Bags Or 414 Kg cement.
 
Is This Answer Correct ?    51 Yes 38 No
Rahul Mehta J.e
 
Answer
# 7
for designing 1m3 concrete of M25 mix the ratio is 1:1:2
for calculating cement,sand and course aggregate ,
cement= 1/(1+1+2)=.25
density of cement =1440kg/m3
cement required for this mix=1440*.25=360kg=6bags+10kg
sand=1/4=.25m3
course aggregate=1-.5=.5m3
this methode of designing is known as volume batching ,this
methode will be ues to design mixes upto m25.
 
Is This Answer Correct ?    43 Yes 32 No
Subilash .s(civil Engineer)
 
Answer
# 8
For m30 8 bags cement 
Is This Answer Correct ?    11 Yes 2 No
Fsdfsdfsdfs
 
Answer
# 9
for m30 grade .we have to calculate the quantity of all
ingredients of concrete by design mix as per IS
10262-2009.it depends upon the whether admixture is used or not.
 
Is This Answer Correct ?    29 Yes 21 No
Samsulhoque@jadavpur Universit
 
Answer
# 10
first of all We should conseder in our colculation the
ratio of cement,Sand , aggregate and water cement ratio
which we have received from mix design test
 
Is This Answer Correct ?    11 Yes 4 No
Engineer M.aziz
 

 
 
 
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