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  #1  
25th April 2013, 08:01 PM
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What is the full meaning of M-15 and M-20?


What is the full menaing of M-15 & M-20...please tell me what does it mean



  #2  
28th July 2017, 10:50 PM
akaygagat
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Join Date: Jul 2017
Posts: 58
Default Re: What is the full meaning of M-15 and M-20?

M15, M20, M30-M120 are the grades of CONCRETE. M stands for Mix. The numbers after M represents the STRENGTH OF THE CONCRETE attained after 28 days of curing. say if it is M20, then the strength of that particular concrete will be 20N/mm2 (Newton per square millimetre).
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