Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 5 (Q.No. 29)
29.
For a concrete mix 1:3:6 and water cement ratio 0.6 both by weight, the quantity of water required per bag, is
Discussion:
57 comments Page 3 of 6.
Qasim Ale said:
8 years ago
Excellent explanation. Thank you all.
Nilesh said:
8 years ago
W/c ratio means the ratio of the weight of water to the weight of cement so that 0.6 * 50 = 30 kits or kg.
Saideepak Nagajjanavar Hangal said:
8 years ago
Let's discuss with the calculation of material for 1cum concrete (1:2:4).
Dry volume m = 1X1.45 (45 % to 55 % Increase in volume = 1.45 cum.
Cement = 1.45/(1+2+4) = 0.207 cumX1470 = 304.29 kg. (Density 1470)
Sand = 1.45/(1+2+4) X2 = 0.414 cum/X1350(Density) = 558.9 Kg.
CA = 0.207X4 = 0.828cumX1300 = 1076.4 Kg.
Therefore 1 : 2 : 4.
304.29 Kg : 558.9 Kg : 1076.4 Kg for 1 CUM.
Dry volume m = 1X1.45 (45 % to 55 % Increase in volume = 1.45 cum.
Cement = 1.45/(1+2+4) = 0.207 cumX1470 = 304.29 kg. (Density 1470)
Sand = 1.45/(1+2+4) X2 = 0.414 cum/X1350(Density) = 558.9 Kg.
CA = 0.207X4 = 0.828cumX1300 = 1076.4 Kg.
Therefore 1 : 2 : 4.
304.29 Kg : 558.9 Kg : 1076.4 Kg for 1 CUM.
Saideepak nagajjanavar Hangal said:
8 years ago
Generally, water cement ratio is taken in between 0.5-0.6.
@Nazim.
w/c= water/cement
0.5= water/1 bag
0.5= water/50kg
water= 25 litres.
@Nazim.
w/c= water/cement
0.5= water/1 bag
0.5= water/50kg
water= 25 litres.
Sanju said:
8 years ago
Water cement ratio 0.6 means, 50 * 0.6 = 25.
RG Ranjan said:
8 years ago
I think the correct answer is 30 kg.
AMIT ANAND said:
8 years ago
Here we have to know only about the requirement of water for 1-bag of cement.
We know 1bag contain 50 kg cement.
As per w/c ratio its value 0.6 i.e 60 litre pe 100kg cement,
So the density of cement nearly 1440kg/cum,
Density = mass/volume.
So, volume=[mass]/density * 1000,
i.e 50/1440 * 1000,
Ans is 34.7222 which is nearly 35.
Hence 35 kg answer is right.
We know 1bag contain 50 kg cement.
As per w/c ratio its value 0.6 i.e 60 litre pe 100kg cement,
So the density of cement nearly 1440kg/cum,
Density = mass/volume.
So, volume=[mass]/density * 1000,
i.e 50/1440 * 1000,
Ans is 34.7222 which is nearly 35.
Hence 35 kg answer is right.
Vinay said:
8 years ago
For 1:3:6 mix for 1 cu.m.
Total dry volume = 1.5.
Now total cement required is,
--- 1/(1+3+6)*1.5 = 0.15 volume of cement.
= 0.15/0.0347 = 4.33 bags.
1bag- 50kgs,
50*4.333=216 kg,
Approximate 4 bags,
W/c=0.6.
W = 0.6 *200= 120kg.
Water required is 120kg for 4 bag of cement.
For one bag = 120/4 = 30 KGS.
Total dry volume = 1.5.
Now total cement required is,
--- 1/(1+3+6)*1.5 = 0.15 volume of cement.
= 0.15/0.0347 = 4.33 bags.
1bag- 50kgs,
50*4.333=216 kg,
Approximate 4 bags,
W/c=0.6.
W = 0.6 *200= 120kg.
Water required is 120kg for 4 bag of cement.
For one bag = 120/4 = 30 KGS.
Inayat said:
8 years ago
Thanks to all. It was very helpful.
Chijioke said:
8 years ago
Determine the quantities of water needed to mix 150kg of cement used for concrete mix.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers