Answer / shabarish

As the grade of the concrete increses, the strength gets
increases.

Answer / k pramod

M40-As the grade of concrete increases the strength also
increases.....

Answer / nagori salim

M - Mix.

20,30,.. etc.- Characteristic Strength of concrete after 28
days of curing.

Higher the number, higher is the strength of concrete
always.

Answer / santosh

M40

Answer / kunal sharma

M-40

Answer / sharad

M40 GRADE OF CONCRETE IS MORE STRONGER THAN OTHERS BECAUSE
CEMENT CONTENTS IS MORE IN CASE OF M40 CONCRETE.

Answer / surajitg

For this question it is M40; 20,25,30,35,40 all these are
strength in N/sqmm unit. So obviously it is M40.

Answer / momin yusra

in this question M40 is strongest one but there are many
further grades which are more stronger than M40 such as
M45,M50,M55 etc.

Answer / sangameshwar

obiviously M40 ...because its characterestics strength is
high....

Answer / vikas jinturkar

M 40 40 INDICATES COMPRESSIVE STRENGTH GAINS BY CONCRETE PER MM2 IN NEWTON IN 28 DAYS.
THUS M 40 IS REACH THAN ANY OTHER .

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