Civil Engineering - Building Materials - Discussion

Discussion Forum : Building Materials - Section 3 (Q.No. 45)
45.
If water required for 1 bag of cement is 30 litres, the water cement ratio is :
0.40
0.50
0.60
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
39 comments Page 2 of 4.

Hariman meena said:   7 years ago
C is right.

Because of a density of water is 1kg/lit.

So 30kg=30Lit.

Amit Bhandari said:   7 years ago
Since Water cement ratio = weight of water/weight of cement.

(Note: the unit of weight is kg and unit of volume is lit)
The weight of 1 bag (vol -35 lit or 0.035 CuM) of cement is= 50kg.
The weight of 30 lit of water = 30 kg (since the density of water is 1kg/lit).
Therefore, W/C ratio = 30 kg(weight)/50 kg (weight) = 0.6 (Answer).

Option 'C' is the right answer!

Deepak said:   7 years ago
The density of water is 1000kg/m^3.
And 1 m^3 equals to 1000 litres.
1 litre of pure water has a weight of 1 kg.

We know that the density of pure water is 1000 k g/m 3.
It means 1 cubic meter of pure water has a weight of 1000 kg.

CB Singh said:   7 years ago
Water cement ratio is weight ratio of water & cement.

Vicky said:   7 years ago
The water-cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.

So 30/50=0.6 (option C is correct).

Babita said:   7 years ago
w/c ratio is the weight of water to weight of cement not the volume of cement.

So, 30/50 =0.60.

1 bag of cement is 50 kg & 35 ltr.

Sunil said:   6 years ago
W/c ratio is measured in kg/l, so option C is correct.

Sable said:   6 years ago
W, c ratio is 60.

Chetan said:   6 years ago
W/c ratio is measured in lit/kg.

Answer must be C.

Santosh said:   5 years ago
Great, Thanks @Abhiraj.


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