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 5 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.
Antony praveen said:
9 years ago
@ Malavika & @Rajayogan.
Why we calculate the percentage of water. What's benefits? Please discuss with us.
Why we calculate the percentage of water. What's benefits? Please discuss with us.
MD SAMSUZZAMAN said:
9 years ago
Actually, if we consider the above question then the answer will be 400%.
Y. vamsi krishna said:
9 years ago
Normal consistency of water (%) = (wt.of water/wt .of cement) * 100,
Then given
wt .of water : 1500.
wt.of cement : 1875.
= (1500/1875) * 100 = 80%.
Then given
wt .of water : 1500.
wt.of cement : 1875.
= (1500/1875) * 100 = 80%.
Protin said:
9 years ago
I agree with Rajayogan. If the weight of cement is only 375 gms and the water is 1500 gms/ml, try mixing it to make a paste, practically it won't form a paste but it will become a solution of cement and water. But 1500gms of cement and 375 gms of water is possible to make a paste.
So the question shall be recapitulated as stated by Prof. Sir.
So the question shall be recapitulated as stated by Prof. Sir.
Bharat muduli said:
9 years ago
Percentage of water = wt of cement/weight of water = (1875 - 1500)/[1500] * 100 = 25%.
Aftab Alam said:
9 years ago
Percentage of water = wt of water/wt of cement.
Agree @ P. Rajayogan.
Agree @ P. Rajayogan.
Baloch said:
9 years ago
P = w/c * 100.
Where, w = weight of water, c = weight of cement.
Where, w = weight of water, c = weight of cement.
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.
Jack said:
9 years ago
% of water is not equal to (wt of water/wt of cement) x 100.
% of water = (wt of water/wt of cement paste) x 100.
= 1500/1875 x 100,
= 80%.
And hence the cement content must be 20%.
% of cement = (1875-1500)/1875 x 100 = 20%.
% of water = (wt of water/wt of cement paste) x 100.
= 1500/1875 x 100,
= 80%.
And hence the cement content must be 20%.
% of cement = (1875-1500)/1875 x 100 = 20%.
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