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 9 of 10.
Medhat Abdulaziz said:
9 years ago
Calculate the percentage of water (P) by weight of dry cement required to prepare cement paste of standard consistency by the following a formula, and express it in the first place of decimal.
Cement consistency 1.
P = (W/C)*100
Where,
W = Quantity of water added.
C = Quantity of cement used.
Cement consistency 1.
P = (W/C)*100
Where,
W = Quantity of water added.
C = Quantity of cement used.
Mohamad said:
10 years ago
I agree with my colleagues that the question is wrong.
The water weight should be 375 gram.
The water weight should be 375 gram.
Ken said:
10 years ago
Is this o/o of water constant or what I want to know?
DARSHAN H A said:
10 years ago
Normal consistency is the ratio of w/c, hence in the question weight of cement is 1500 and weight of water is 1875-1500 = 375.
The question it self is wrong. By understanding the concept we can calculate consistency = 375/1500 x 100 = 25%.
The question it self is wrong. By understanding the concept we can calculate consistency = 375/1500 x 100 = 25%.
Denzil said:
9 years ago
Wt. of cement = 1875 - 1500 = 375.
Water/cement ratio (or ratio of water per dry cement) = 1500/375 = 4.0.
%water = 400% -------> this is the answer.
Whoever using this kind of mix, and will say the resulting paste is of normal consistency.
Water/cement ratio (or ratio of water per dry cement) = 1500/375 = 4.0.
%water = 400% -------> this is the answer.
Whoever using this kind of mix, and will say the resulting paste is of normal consistency.
Najrul said:
10 years ago
Wt of cement = 1875-1500 = 375.
Wt of water = 1500.
% of water required = 375/1500*100 = 25% answer.
Wt of water = 1500.
% of water required = 375/1500*100 = 25% answer.
Mann said:
10 years ago
As we know the formula for water content = wt. of water/wt. solid.
Similarly here, % of water = (wt. of water/wt. of cement) x 100.
So, the data given I question is wrong, wt. of water should be 375 g, and wt of cement paste is 1875 g.
Similarly here, % of water = (wt. of water/wt. of cement) x 100.
So, the data given I question is wrong, wt. of water should be 375 g, and wt of cement paste is 1875 g.
Koteswararao said:
1 decade ago
Weight of cement = 1875-1500 = 375.
Weight of water = 1500.
w/c = 375/1500*100 = 25%.
Weight of water = 1500.
w/c = 375/1500*100 = 25%.
Hassanain Turi said:
1 decade ago
As stated in question 1500 g of water and paste is 1875 then simply we get (weight of water/water+cement)*100 = (1500/1875)*100 = 80%.
Medo said:
1 decade ago
1500/1875 = 80% is the right answer.
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