Civil Engineering - Concrete Technology - Discussion

Discussion Forum : Concrete Technology - Section 3 (Q.No. 49)
49.
To hydrate 500kg of cement full water needed, is
100 kg
110 kg
120 kg
130 kg
140 kg
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
30 comments Page 3 of 3.

Shahbaz said:   7 years ago
Thanks for the answer @Jayrasinhi.

Jayrajsinh said:   8 years ago
Cement 500= 0.35 m3 ( 50 kg cement =0.035 m3 cement )
Water Req for cement 38 %.
= 0.35 * 38/woo.
= 0.133 m3 Water.

From Water Density.
1000 kg/m3 = (kg/0.133 m3).
Water = 133 kg.

Minesh said:   8 years ago
25% water need to full hydrate of cement.

Vijay said:   8 years ago
23+15=bound water +gel water = full hydration=0.38.
So w/c=0.38=w/500 so w=500 * 0.38=190.

Saifalikhan said:   8 years ago
25% for hyderation and 20% to fill gel pores.

Swapnil pokulwar said:   9 years ago
For 50kg cement, 35 kg water is needed.

So, for 500kg its 135 = 130kg.

Nazira said:   9 years ago
For complete reaction, 38% of water by weight of cement is required.
0.38 * 500 = 190 kg.

But the answer given in this option is 130kg.

How?Can anybody explain?

Sudhansu bhagat said:   9 years ago
24%for Hydration of cement + 15% Jel of water.

So 24 * 500 :- 120liter.

Soumya choudhury said:   1 decade ago
Actually it is 25% of corresponding water of cement.

So 500*0.25 = 125 kg. But according to option given answer will be 130 kg.

Amar Deep Tiwari said:   1 decade ago
% wt of water required for full hydration is 26% by wt of cement.

i.e., 26*500/100 = 130 kg.


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