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Question
```What is the proportion of cement agg. and sand for M20,M25
and M30?```
Question Submitted By :: Komal Patel
I also faced this Question!!     Rank Answer Posted By

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 1
M20 - 1(Cement):1(1/2)(Fine aggregate):3(Coarse aggregate)
M25 - 1(Cement):1(Fine aggregate):2 (Coarse aggregate)

 Is This Answer Correct ? 64 Yes 13 No
G.karthikeyan

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 2
mM20 : 1:1.5: 3

M25 : is a design mix. & the proportion can be obtained
only on the basis of materials required & only in the lab.

 Is This Answer Correct ? 40 Yes 7 No
Shabarish

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 3
The mix proportions for M20 & M25 both, shall be designed
by laboratory trials and designed according to BIS 10262,
383 & 456 or SP 23. The ratio 1:1.5:3 was given earlier in
IS 456 but IS 456 (2000) does not recommend volumetric
batch for even M20 and hence both should be designed as per
requirement, i.e. it depends on the type of cement,
importantly the water cement ratio.

 Is This Answer Correct ? 19 Yes 1 No
Bhavna Tripathi

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 4
M20 1:1 1/2:3
M25 1:1:2
M30 Proportion not specified its depending upon mix design'

 Is This Answer Correct ? 16 Yes 4 No
Tiru

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 5
M20 1:1.5:3
M25 1:1:2
M30 will depend upon the mix design

 Is This Answer Correct ? 19 Yes 1 No
Ashish

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 6
M10 manual mix, proportion is 1:3:6(C:FA:CA)
M15 manual mix, proportion is 1:2:4

> M15 are design Mix, and proportion on Weight basis (not by
volume basis) depend upon grade/type of cement, type of fine
aggregate and Coarse aggregate

However for the estimate purpose the cement can be calculated
For M15 (1:2:4)– cement is 6.37 bags/Cum
M20(1:1.5:3) Cement -8.09 bags/Cum
M25 (1:1:2)cement -12.2 bags/Cum

 Is This Answer Correct ? 20 Yes 4 No
Nimmakayala
[Railways]

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 7
M20 1:2:4
M25 1:1:2
M30 1:1:2

 Is This Answer Correct ? 2 Yes 22 No
Ismail

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 8
concrete is designed by Job Mix Formulae, not just by
taking some standard values

 Is This Answer Correct ? 1 Yes 3 No

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 9
M20 1:2:4
M25 1:1.5:3
M30 1:1:2

 Is This Answer Correct ? 1 Yes 20 No
Deepak Kumar

Re: What is the proportion of cement agg. and sand for M20,M25 and M30?
# 10
M 15 - 1:2:4 , M20 - 1:1.5"3 , M30 - 1:1:2
 Is This Answer Correct ? 2 Yes 6 No
Muthazhagi

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