Answer / manoj sinha

M40

Answer / vijayaraja

M40 is the high strength concrete bcz it has 40 N/mm2
strength.others are less

Answer / gunaseelan.s

M40......bcuase it have a high characteristic compressive
strenth attained in 28 days.....

Answer / vinit

Its M40

Answer / rajesh

Its depend upon mix design

Answer / nagesh raj

M- 40 is strongest It depends upon the design mix, . M-40
means its strengthis 40n/mm2

Answer / ahalnath

m40

Answer / ravi

Strengh of M20 = 20 MPa
Strengh of M25 = 25 MPa
Strengh of M30 = 30 MPa
Strengh of M35 = 35 MPa
Strengh of M40 = 40 MPa

So, M40 has the highest strength. When the grade of concrete is directly given, mix ratio doesnt come into picture. We use proper mix to get the desired grade of concrete.

Answer / jainendra

M40 becoz the ratio of cement:sand:aggregate is higher
then the other. which are the core factor for any mix. the
property of any mix like compreesive strength,
characterstic strength etc . largely depends on the ratio.

Answer / mani

M means mix,and numerical value give the strenth of
concrete in n/mm2.therefore higher the value of mix,higher
the compressive strenth of concrete.M40

factory shed foundation l=4, b=3' d=8' rcc foudation for top to bottom pl tell me cement ,steel ,sand ,labour cost ,excavtion,soil is weak not so hard

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