Science, asked by mitta1, 1 year ago

what are means of M 20 grade

Answers

Answered by junedkhan1234

In this designation the letter M refers to the mix and the number to the specified 28 day cube strength of mix in N/mm2. The mixes of grades M10, M15, M20 and M25 correspond approximately to the mix proportions (1:3:6), (1:2:4), (1:1.5:3) and (1:1:2) respectively.

junedkhan1234: Plz mark as brainlist answer

mitta1: okkk

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