Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 3 (Q.No. 9)
9.
The ratio of various ingredients (cement, sand, aggregates) in concrete of grade M 200, is
1 : 2 : 4
1 : 3 : 6
1 : 
: 3
: 31 : 1 : 2
4 : 2 : 1
Discussion:
17 comments Page 1 of 2.
Mubashir Sheheryar said:
5 years ago
@Jahidul Islam.
For M15 - 1:2:4.
For M15 - 1:2:4.
Jahidul islam said:
5 years ago
M10 = 1:3:6,
M15 = 1:2:3,
M20 = 1:1.5:3.
M15 = 1:2:3,
M20 = 1:1.5:3.
Abhik said:
7 years ago
M20 and M200 both are same. Only units are different.
Sridhar said:
7 years ago
It's not M200 it obviously M20.
(1)
Aesthetic said:
7 years ago
1 : 1.5 : 2 is correct.
Pakkirappa said:
8 years ago
Thank you @Midhun Madhav.
Midhun Madhav said:
8 years ago
M5 - 1:5:10
M7.5 - 1:4:8
M10- 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
This is Volume Batching. Also when you convert N/sq.mm to Kg/sqcm, you will get M 20 grade as M200 approx. The conversion factor is like 1 N/mm2 = 9.8 Kg/cm2 or approx 10 kg/cm2.
It is also prescribed in the IS 456 that the design mix has to be carried out for mixes above M20.
1:1:2 shall otherwise be used in M25 grade in case of extreme necessity with the consent from Engineer in Charge.
M7.5 - 1:4:8
M10- 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
This is Volume Batching. Also when you convert N/sq.mm to Kg/sqcm, you will get M 20 grade as M200 approx. The conversion factor is like 1 N/mm2 = 9.8 Kg/cm2 or approx 10 kg/cm2.
It is also prescribed in the IS 456 that the design mix has to be carried out for mixes above M20.
1:1:2 shall otherwise be used in M25 grade in case of extreme necessity with the consent from Engineer in Charge.
(1)
Eeshwar said:
9 years ago
What about M15?
Previously I read M15 was supposed to be 1 : 1 : 2. Somebody, please explain.
Previously I read M15 was supposed to be 1 : 1 : 2. Somebody, please explain.
DARSHAN H A said:
9 years ago
It is M20 not M200.
Mohammad khaleel said:
1 decade ago
M20 is 20 N/mm2 and M200 is 200 kg/cm2.
For M20 or M200 grade.
Cement : Sand : Aggregate == 1:1.5:3.
For M20 or M200 grade.
Cement : Sand : Aggregate == 1:1.5:3.
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