Civil Engineering - Concrete Technology - Discussion

24. 

The grade of concrete not recommended by I.S. : 456, is

[A]. M 100
[B]. M 200
[C]. M 300
[D]. M 400
[E]. M 500

Answer: Option E

Explanation:

No answer description available for this question.

Chandu said: (Jun 27, 2015)  
Give explanation please.

Shiva said: (Oct 9, 2015)  
It would be M 10.

Rohit Thakur said: (Apr 16, 2016)  
I think it should be D. M400.

Umair said: (Aug 17, 2016)  
Why not A) M100?

Pawan said: (Nov 20, 2016)  
I think it is Both M 100 & M 500.

Santosh Hembrom said: (Nov 30, 2016)  
I think both M400 & M500.

Jack said: (Dec 17, 2016)  
According to IS 456:2000 & IS 1343:1980, the concrete mixes are designated into 7 grades---- M10, M15, M20, M25, M30, M35 and M40.

Indranil Karfa said: (May 12, 2017)  
IS456 : 1978- M50.

IS456: 2000-M10 & M50.

Naveena said: (Apr 2, 2018)  
Yes, right @Jack.

According to IS 456 there are only 7 grades.

So, M500 is the right answer.

Abhishek said: (Jul 25, 2019)  
According to IRC there are only 7 grade of concrete. M10, M15, M20, M25, M30, M35, M40.

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