Discussion :: Concrete Technology  Section 1 (Q.No.8)
8.  According to I.S. : 456, the number of grades of concrete mixes, is 

Answer: Option E Explanation: No answer description available for this question.

Abhi said: (Jul 19, 2013)  
Standarad concrete is 7 m20 to m60. High strength is m65 t0 m80. Ordinary strength 3m m10 to m20. 
Maggie said: (Jul 27, 2013)  
Nominal mix concrete : M5, M10, M15, M20, M25, M30, M35. 
Sonu Sharma said: (Sep 28, 2013)  
According IS 4562000. Nominal mix concrete is, M10, M15, M20, M25, M30, M35, M40. 
Rahul said: (Oct 26, 2013)  
According IS 4562000. The number of grades of concrete mixes: M10, M15, M20, M25, M30, M35, M40. 
Augustin said: (Nov 28, 2013)  
The number of grades of nominal concrete mixes, is 7: M5, M10, M15, M20, M25, M30 and M35. 
Arabinda Khanra said: (Jan 5, 2014)  
What is the ratio of M30, M35 and M40? 
Soniya said: (Jan 7, 2014)  
Above M30 Mix design is done because 5 ingredient of concrete will start above M30 i.e. cement, aggregates, water, admixture. 
Govardhan said: (Mar 14, 2014)  
How M30, M35 can be treated as nominal mix?. It falls under the category of design mix. 
Anish said: (Apr 28, 2014)  
How can we find out the ratio of M30, M35, M40, M50? 
Sabyasachi Sen said: (Jun 14, 2014)  
Nominal concrete grades are from M5 TO M25 maximum. But still we need to have mix for M 25 also. Here we take std concrete which starts from M 25 TO M 55 (i.e. 7) from IS 456:2000 table 2. 
Vikas Singh Tomar said: (Dec 6, 2014)  
Standard seven grades of is, 456 are: M2S. M30. M3S. M40. M4S. MSO. M55. 
Lisha Paul said: (Dec 8, 2014)  
As per IS 456 ordinary concrete M10; M15; M20. Standard Concrete M25 to M55. High strength concrete is M60 to M80. 
Laxmikanta Nayak said: (Dec 16, 2014)  
According to IS 4562000 the above said @Sonu Sharma concrete design is correct. 
Aditya Dubey said: (Jan 4, 2015)  
According to I.S. 4562000. Standard Concrete: M25. M30. M35. M40. M45. M50. M55. Total: 7. 
Suraj said: (Jan 27, 2015)  
Someone saying from m5 to m35 and few m25 to m55. Which one is correct>>>>? 
Alekhya said: (Jan 27, 2015)  
How to identify the concrete is nominal mix or design mix using concrete grades? 
Kani said: (Apr 28, 2015)  
M5, M7.5, M10, M15, M20, M25... I don't know whether M30 will also be included. 
Harsh said: (Jun 25, 2015)  
As per is 456:2000. 7 grades. M10, 15, 20, 25, 30, 35, 40. 
Sapna said: (Jul 7, 2015)  
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. 
Ajeet said: (Jul 20, 2015)  
M15, M20, M25, M30, M35, M40, M45. 
Jainam said: (Aug 18, 2015)  
M25 to M55. 
Sabya said: (Oct 15, 2015)  
According to IS 456 table 2 Grade of concrete is (M25M55) 7 grade. 
Mahesh Gaikwad said: (Oct 31, 2015)  
M5 to M20 Ordinary Concrete. M25 to M80 Standard Concrete. M85 to M200 High Strength Concrete. 
Ali said: (Dec 1, 2015)  
I want make design for (M30) 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. 
Madhu said: (Feb 13, 2016)  
IS 4562000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40. 
Lukman Ada said: (Mar 3, 2016)  
According to IS 4562000 grade of concrete are as follows, 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). 
Diya said: (May 6, 2016)  
The value should be 15 as per IS 456  2000. 
Alekhya said: (May 15, 2016)  
As per IS 4562000. Grades of concrete mixes: M10, M15, M20, M25, M30, M35, M40. 
Samsung said: (Jul 26, 2016)  
For above M25 grade we follow mix design as per IS or design method. 
Nitesh said: (Aug 31, 2016)  
Yes, I.S. code is gave of concrete grade is 7.5, 10, 15, 20, 25 and according your design above 25 to 55. 
Ashok said: (Sep 17, 2016)  
IS 4562000 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: (Nov 19, 2016)  
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. 
Vishnu said: (Apr 5, 2017)  
According to old code(IS 4561978) there are 7 grades of concrete(M10 to M40). According to new code(IS 4562000) there are 9 grades (M10 to M50). 
Nitin Gavit said: (Apr 25, 2017)  
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. 
Indranil Karfa said: (May 12, 2017)  
It is M10  M40. Ref: KHURMI & GUPTA(civil engg MCQ). 
Bmsadhu said: (Sep 4, 2017)  
Can anyone tell me what is the mix pro of m30 and m35? 
Prabhu said: (Sep 28, 2017)  
M60 above concrete cannot using cement its true. 
Saket Jain said: (Oct 29, 2017)  
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. 
Garry said: (Dec 1, 2017)  
Here in this question, the standard grade is asked only. From M25 to M55. 
Amit Naik said: (Jan 4, 2018)  
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. 
Ashar Jami said: (Feb 6, 2018)  
For above M25, we go for Mix design. 
Abhishek said: (Mar 31, 2018)  
According to IS 456:2000 NOMINAL MIN IS FROM M5 TO M25. BUT ACCORDING TO IS 456: 2013 NOMINAL MIX IS FROM M5 TO M20. Mix m25 and above are now regarded as design mix. 
Deepak Martha said: (Aug 31, 2018)  
According to IS 456:2000 c9.3 nominal concrete may be used M20 or less. So, according to IS 456:2000 the nominal mix concrete is M5, M7.5, M10, M15, M20 mention in the table no09 of is 456:2000. 
Mn Yogi said: (Sep 11, 2018)  
Ordinary Concrete  M 10 to M 20. Standard Concrete  M 25 to M 55. High strength Concrete above M55. 
Neha said: (Sep 12, 2018)  
IS 4562000 has designated the concrete mixes into a number of grades as M10, M15, M20, M25, M30, M35 and M40. This is the correct answer. 
Jeetu said: (Oct 24, 2018)  
The correct answer =3 grades. The concrete mix = M10 M15 M20. Design mix= M25 M55. High Concrete up to M80. 
Sumanmondal said: (Jan 12, 2019)  
The concrete mixes are: M10, M15, M20, M25, M30, M35, M40 
Akshey Sharma said: (Jun 1, 2019)  
@All. Just read the question again they asking the number of grade, Not standard, not ordinary also not high strength. So, Total no of grade is 15 (M10M80). 
Aparna Dubey said: (Jul 27, 2019)  
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. 
K.Das said: (Aug 3, 2019)  
1.Ordinary concrete 5 (M5 to M20). 2. Stander concrete 8 (M25 to M60). 3. Hight strength Concrete 4 (M65 to M80). 
Akshay Salve said: (Nov 24, 2019)  
According to IS 4562000 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 
Nitin Bairagi said: (Feb 11, 2020)  
Acc.to IS 456 7 grades: M10 M15 M20 M25 M30 M35 M40 
Nilesh Ghidode said: (Feb 13, 2020)  
M5 M7.5 M10 M15 M20 M25 M30 
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