Civil Engineering - Concrete Technology - Discussion

47. 

For the construction of the retaining structures, the type of concrete mix to be used, is

[A]. 1 : 3 : 6
[B]. 1 : 2 :4
[C]. 1 : : 3
[D]. 1 : l : 2
[E]. 1 : 4 : 8.

Answer: Option C

Explanation:

No answer description available for this question.

Sudip said: (Dec 3, 2016)  
For retaining structures, a/c to IS456, M20 grade is recommended. That means option C is the correct answer.

Koushik Das said: (May 29, 2019)  
It is M25.

Palash said: (Aug 6, 2019)  
Yes,

M20 - for general retaining structure.
M25 - for water retaining structure.

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