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Question
What is the proportion in M-20, M-25, M-30 grade of 
concrete?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Propertion in M-20 is 1:1.5:3 and in M-25 is 1:1:2,M-30 is
based upon the disign.
 
Is This Answer Correct ?    32 Yes 5 No
Devi Singh
 
Answer
# 2
M20 (1:1/2:3) M25(1:1:2) there is no proportion for M30 its
a rich design mix concrete only.
 
Is This Answer Correct ?    22 Yes 7 No
Chandu
 
 
 
Answer
# 3
watter, cement, crushed stone meby addmixture 
Is This Answer Correct ?    1 Yes 9 No
M.haseeb Yaquobi
 
Answer
# 4
M-20 means lower grade use in slab casting

(1:1.5:3)
M-25(use in coulam casting - 1:1:1.5)
M-25(use in Raft and foundation use and mix Desgion not
1:1:1 ok
through Indian standard code IS:456
 
Is This Answer Correct ?    1 Yes 10 No
Om Prakash Narayan
 

 
 
 
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