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 4 of 7.
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.
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.
Vishnu said:
8 years ago
According to old code(IS 456-1978) there are 7 grades of concrete(M10 to M40).
According to new code(IS 456-2000) there are 9 grades (M10 to M50).
According to new code(IS 456-2000) there are 9 grades (M10 to M50).
Nitin Gavit said:
8 years ago
As per IS 456 : 2000 grade of concrete is:
Ordinary concrete - M10, M15, M20.
Standard concrete - M25, M30, M35 M40 M45 M50 M55.
High strength concrete - M60 M65 M70 M75 M80.
Ordinary concrete - M10, M15, M20.
Standard concrete - M25, M30, M35 M40 M45 M50 M55.
High strength concrete - M60 M65 M70 M75 M80.
INDRANIL karfa said:
8 years ago
It is M10 - M40.
Ref: KHURMI & GUPTA(civil engg MCQ).
Ref: KHURMI & GUPTA(civil engg MCQ).
Bmsadhu said:
8 years ago
Can anyone tell me what is the mix pro of m30 and m35?
Prabhu said:
8 years ago
M60 above concrete cannot using cement its true.
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.
Garry said:
8 years ago
Here in this question, the standard grade is asked only.
From M25 to M55.
From M25 to M55.
Amit naik said:
8 years ago
Nominal mix concrete is said under M20 or lower & standard concrete grades are 7 i.e; m25 to m55.
These values are from IS 456:2000.
These values are from IS 456:2000.
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