Civil Engineering - Concrete Technology - Discussion
Discussion Forum : Concrete Technology - Section 1 (Q.No. 8)
8.
According to I.S. : 456, the number of grades of concrete mixes, is
Discussion:
62 comments Page 1 of 7.
Sapna said:
1 decade ago
A) Ordinary Grade M 10 to M 20.
B) Standard concrete M 25 to M 55.
C) High strength concrete M 60 to M 80.
D) The minimum grade of concrete for plain and reinforced concrete in.
Various exposures conditions have been revised as under:
Minimum Exposure condition grade of concrete.
Plain Cement.
Concrete.
Reinforced Cement.
Concrete.
Mild - M 20.
Moderate M 15 M 25.
Severe M 20 M 30.
Very Severe M 20 M 35.
Extreme M 25 M 40.
B) Standard concrete M 25 to M 55.
C) High strength concrete M 60 to M 80.
D) The minimum grade of concrete for plain and reinforced concrete in.
Various exposures conditions have been revised as under:
Minimum Exposure condition grade of concrete.
Plain Cement.
Concrete.
Reinforced Cement.
Concrete.
Mild - M 20.
Moderate M 15 M 25.
Severe M 20 M 30.
Very Severe M 20 M 35.
Extreme M 25 M 40.
Ashok said:
9 years ago
IS 456-2000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40. In this designation the letter M refers to the mix and the number to the specified 28 day cube strength of mix in N/mm2. The mixes of grades M10, M15, M20 and M25 correspond approximately to the mix proportions (1:3:6), (1:2:4), (1:1.5:3) and (1:1:2) respectively.
Akshay Salve said:
6 years ago
According to IS 456-2000 grade of concrete.
Ordinary Concrete - M 10 to M 20(3 grade).
Standard Concrete - M 25 to M 55(7 grade).
High strength Concrete - M 60 to M 80(5 grade).
M5 1:5:10
M7.5 1:4:8
M10 1:3:6
M15 1:2:4
M20 1:1.5:3
M25 1:1:2
M30 As per Design
M35 As per Design
M40 As per Design
Ordinary Concrete - M 10 to M 20(3 grade).
Standard Concrete - M 25 to M 55(7 grade).
High strength Concrete - M 60 to M 80(5 grade).
M5 1:5:10
M7.5 1:4:8
M10 1:3:6
M15 1:2:4
M20 1:1.5:3
M25 1:1:2
M30 As per Design
M35 As per Design
M40 As per Design
Kusal Pal said:
4 years ago
According to IS 456-1978.
There are only 7 Grades.
But According to IS 456-2000;
(M10-M20) = nominal mix.
(M25-M60) = standard mix M60 was added to standard mix from high mix in amendment of IS 456:2000 code in 2013).
M65 - M100.
So, there are 19 grades of concrete mix.
There are only 7 Grades.
But According to IS 456-2000;
(M10-M20) = nominal mix.
(M25-M60) = standard mix M60 was added to standard mix from high mix in amendment of IS 456:2000 code in 2013).
M65 - M100.
So, there are 19 grades of concrete mix.
(15)
Yasir said:
4 years ago
The answer @Junaid Nisar gave is correct.
According to IS 456:2000:
M10-M20 (nominal mix)
M25-M60 ( standard mix M60 was added to standard mix from high mix in amendment of IS code in 2013).
M65-M100.
So, basically there are 19 grades of concrete.
According to IS 456:2000:
M10-M20 (nominal mix)
M25-M60 ( standard mix M60 was added to standard mix from high mix in amendment of IS code in 2013).
M65-M100.
So, basically there are 19 grades of concrete.
(4)
Aparna Dubey said:
6 years ago
A/c to IS 456: concrete mix designated in 7 grades.
M100,
M150,
M200,
M250,
M300,
M350,
M400.
For design mix Letter M refers to mix and number to specified characteristics compressive strength of 15 cm cube at 28 days in N/mm^2 or kg/cm^2.
M100,
M150,
M200,
M250,
M300,
M350,
M400.
For design mix Letter M refers to mix and number to specified characteristics compressive strength of 15 cm cube at 28 days in N/mm^2 or kg/cm^2.
Arshad Ali said:
5 years ago
IS 456-2000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40. In this designation, the letter M refers to the mix and the number to the specified 28-day cube strength of mix in N/mm2.
(2)
ABHISHEK NANDI said:
9 years ago
According to IS 456 The grade of concrete are 15, M10, M1,5 M20 (ORDINARY CONCRETE)
M25 M30 M35 M40 M45 M50 M55 (STANDARD CONCRETE).
& M60 M65 M70 M75 M80 (HIGH STRENGTH CONCRETE) So the actual answer is none.
M25 M30 M35 M40 M45 M50 M55 (STANDARD CONCRETE).
& M60 M65 M70 M75 M80 (HIGH STRENGTH CONCRETE) So the actual answer is none.
Ali said:
10 years ago
I want make design for (M-30) what is the mix properties I can use and the details of max below.
OPC53.
Type of Aggregate: Crushed Angular Aggregate.
Chemical admixture type super plasticizer as per IS:1093.
OPC53.
Type of Aggregate: Crushed Angular Aggregate.
Chemical admixture type super plasticizer as per IS:1093.
Saket jain said:
8 years ago
Ans is (B).
There are 7 grades According to I.S. : 456, of concrete mixes, mentioned below.
M5 - 1:5:10
M7.5 - 1:4:8
M10 - 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
M25 - 1:1:2
M30,M35,M40 - Design Mix Followed.
There are 7 grades According to I.S. : 456, of concrete mixes, mentioned below.
M5 - 1:5:10
M7.5 - 1:4:8
M10 - 1:3:6
M15 - 1:2:4
M20 - 1:1.5:3
M25 - 1:1:2
M30,M35,M40 - Design Mix Followed.
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