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,
20%
25%
30%
35%
40%
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
95 comments Page 4 of 10.

Chethan said:   8 years ago
As per code, w/c ratio has not exceeded 1 so wt of water should be less than wt of cement.

Rashmi said:   8 years ago
But the consistency already looks for water weight. How to tally it?

RMS said:   8 years ago
Without any comment, I agree with Prof. P. Rajayogan.

Lam said:   8 years ago
1500 g of water mix with 375 g of cement it's not possible for use in any construction.

I agree with Prof.P.Rajayogan

Baron said:   8 years ago
Why can't we do (1875-1500)/1875*100? Please explain.

Raja said:   8 years ago
1875-1500/1500 = 375 ÷ 1500=0.25 * 100 = 25%.

SUJOY HAZRA said:   8 years ago
(1875-1500) = 375,
375/1500 = 0.25,
0.25 * % = 25%.

Adam said:   8 years ago
Just imagine 1875 nos of fruit in a box 1500 apple and 375 oranges.

Obiously, percentage of apple is high => 1500/1875x100 = 80% and for oranges 375/1875x100 = 20%.

Similarly, water should be 80% and cement is 20%.
(1)

Sachin Kadam said:   8 years ago
Generally 25-30% but excess water affect on strength (decrease strength).

Nur Asurah said:   9 years ago
How many percent needed to achieve the good quality cement paste?


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