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Question
which grade of concrete is the strongest?
M20,M25,M30,M35 or M40?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
M40 
Is This Answer Correct ?    404 Yes 40 No
Manoj Sinha
 
Answer
# 2
M40 is the high strength concrete bcz it has 40 N/mm2
strength.others are less
 
Is This Answer Correct ?    238 Yes 14 No
Vijayaraja
 
 
 
Answer
# 3
Its M40 
Is This Answer Correct ?    156 Yes 13 No
Vinit
 
Answer
# 4
M40......bcuase it have a high characteristic compressive
strenth attained in 28 days.....
 
Is This Answer Correct ?    149 Yes 6 No
Gunaseelan.s
 
Answer
# 5
Its depend upon mix design 
Is This Answer Correct ?    191 Yes 88 No
Rajesh
 
Answer
# 6
M- 40 is strongest It depends upon the design mix, . M-40
means its strengthis 40n/mm2
 
Is This Answer Correct ?    64 Yes 5 No
Nagesh Raj
 
Answer
# 7
m40 
Is This Answer Correct ?    52 Yes 6 No
Ahalnath
 
Answer
# 8
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.
 
Is This Answer Correct ?    50 Yes 11 No
Jainendra
 
Answer
# 9
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.
 
Is This Answer Correct ?    39 Yes 2 No
Ravi
 
Answer
# 10
As the grade of the concrete increses, the strength gets
increases.
 
Is This Answer Correct ?    29 Yes 2 No
Shabarish
 

 
 
 
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