Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 1 (Q.No. 2)
2.
If 1500 g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,
Discussion:
95 comments Page 1 of 10.
B.Arun kumar said:
1 decade ago
Percentage of water = wt of cement/weight of water = (1875-1500)/[1500]*100 = 25%.
Prof. P. Rajayogan said:
1 decade ago
Percentage of water = (wt.of water/wt.of cement)100.
Question should be revised as follows
If 375 ml or g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,
Wt.of water = 375 g.
Wt.of cement = 1875-375 = 1500 g.
Normal Consistency = (375/1500)*100.
= 25%.
Question should be revised as follows
If 375 ml or g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,
Wt.of water = 375 g.
Wt.of cement = 1875-375 = 1500 g.
Normal Consistency = (375/1500)*100.
= 25%.
Malavika said:
1 decade ago
Which one of the answer is correct. According to the question the weight of the water is 1500g why should we take 375g.
Uma said:
1 decade ago
Weight of water = 1500g.
Weight of cement paste = 1875g.
Weight of cement = 1875-1500.
= 375g.
% of water = wt.of cement/wt.of water.
= (375/1500)*100.
= 25%.
Weight of cement paste = 1875g.
Weight of cement = 1875-1500.
= 375g.
% of water = wt.of cement/wt.of water.
= (375/1500)*100.
= 25%.
Usha rani said:
1 decade ago
@Malavika.
As normal consistency test is conducted by mixing water and cement. The value 1875 is for both cement and water. When we subtract water value i.e. 1500g from whole 1875 (cement water paste) we get the weight of the cement.
As normal consistency test is conducted by mixing water and cement. The value 1875 is for both cement and water. When we subtract water value i.e. 1500g from whole 1875 (cement water paste) we get the weight of the cement.
Jay said:
1 decade ago
@B.Arun Kumar, @Malavika.
As per the question,
The percentage of water = (weight of water/ weight of whole mixture)*100.
= (1500/1875)*100.
As per the question,
The percentage of water = (weight of water/ weight of whole mixture)*100.
= (1500/1875)*100.
Nitin said:
1 decade ago
If we will add 1500 gm of water in 375 gm of cement then will it be a cement paste or cement solution ? I am satisfied with Prof. P. Rajayogan's comment.
Shamim alam said:
1 decade ago
weight of cement - weight of water/weight of tare wt*100
a - b/b*100.
So, 1875-1500 = 375/1500*100 = 25%.
a - b/b*100.
So, 1875-1500 = 375/1500*100 = 25%.
VR Chowdary said:
1 decade ago
Percentage of water = wt of cement/weight of water = (1875-1500)/[1500]*100 = 25%.
Rakesh said:
1 decade ago
Simply p of water = (375/1500)*100 = 25%.
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