# Civil Engineering - Concrete Technology - Discussion

### Discussion :: Concrete Technology - Section 1 (Q.No.8)

8.

According to I.S. : 456, the number of grades of concrete mixes, is

 [A]. 3 [B]. 4 [C]. 5 [D]. 6 [E]. 7

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 456-2000. Nominal mix concrete is, M10, M15, M20, M25, M30, M35, M40.

 Rahul said: (Oct 26, 2013) According IS 456-2000. 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 456-2000 the above said @Sonu Sharma concrete design is correct.

 Aditya Dubey said: (Jan 4, 2015) According to I.S. 456-2000. Standard Concrete: M-25. M-30. M-35. M-40. M-45. M-50. M-55. 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) M-15, M-20, M-25, M-30, M-35, M-40, M-45.

 Jainam said: (Aug 18, 2015) M-25 to M-55.

 Sabya said: (Oct 15, 2015) According to IS 456 table 2 Grade of concrete is (M25-M55) 7 grade.

 Mahesh Gaikwad said: (Oct 31, 2015) M-5 to M-20 Ordinary Concrete. M-25 to M-80 Standard Concrete. M-85 to M-200 High Strength Concrete.

 Ali said: (Dec 1, 2015) 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.

 Madhu said: (Feb 13, 2016) IS 456-2000 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 456-2000 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 456-2000. 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 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: (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 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).

 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 c-9.3 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 no-09 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 456-2000 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 (M10-M80).

 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 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

 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