Civil Engineering - UPSC Civil Service Exam Questions - Discussion

13. 

For complete hydration of cement the W/C ratio needed is

[A]. less than 0.25
[B]. more than 0.25 but less than 0.35
[C]. more than 0.35 but less than 0.45
[D]. more than 0.45 but less than 0.60

Answer: Option C

Explanation:

No answer description available for this question.

Debal said: (Mar 24, 2017)  
Answer C is correct.

Pankaj said: (May 7, 2017)  
Yes, the Answer is C.

Himanshu Verma said: (Jun 2, 2017)  
I think option C is right.

Vishnu said: (Jul 13, 2017)  
Option c is right. I too agree.

Kuldeep Adiwal said: (Jul 27, 2017)  
C is the right option. Because we get .38 for completely hydration of water. So .38 is b/w .35 to .45.

Shariq said: (Jan 21, 2018)  
YES, the correct answer is C.

Vivek said: (Mar 4, 2018)  
About 23% water is required for C3S in cement for its complete hydration and extra 15% is required to fill the gel pores formed by the rxn between C3S and H2O.

So in overall 0.23+0.15=0.38 w/c ratio is required,
hence (c) is the correct answer.

Pravin said: (Mar 28, 2018)  
The correct Answer is C.

Raj said: (Jul 17, 2018)  
Yes, The correct answer is C.

Nagsinh said: (Sep 3, 2018)  
Yes, C is the correct answer.

Naresh said: (Sep 19, 2018)  
The correct answer is option C.

Munshi said: (Nov 20, 2018)  
0.36 to be exact.

Kunal Kamra said: (May 14, 2020)  
Yes, it should be 0.23 w/c.

Bilal said: (Apr 10, 2021)  
Minimum water cement ratio for full hydration is 0.36.

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