### Discussion :: Concrete Technology - Section 1 (Q.No.43)

Kameshwar said: (Aug 18, 2013) | |

1:2:4, 1:1:2 is M25. |

Prasanta Ghosh said: (Sep 3, 2013) | |

This is the wrong answer. The correct answer will be 1:2:4. 1:1:2 is the proportion of M25. |

Saleem said: (Sep 4, 2013) | |

The correct for M150 is 1:2:4 mix. |

Jitendra Kumar said: (Dec 14, 2013) | |

This is the wrong answer. The correct answer will be 1:2:4. 1:1:2 is the proportion of M25. |

Gaurav Jain said: (Jan 23, 2014) | |

1:2:4 is the proportion of M15. |

Vaibhav said: (Jan 24, 2014) | |

1:2:4 is correct answer for M25. |

Vijay Gupta said: (Jan 24, 2014) | |

1:2:4 is correct because 1:1:2 is M25. |

Asok said: (Feb 15, 2014) | |

It should be 1:2:4 in nominal mix. |

Rakesh Kumar Poria said: (Feb 15, 2014) | |

1:2:4 is correct because 1:1:2 is M25. |

Md Samsuzzaman said: (May 18, 2014) | |

1:2:4 for M15. But how we are able calculate M150? |

Abinashcandra Giri said: (May 29, 2014) | |

Answer is 1:2:4 WHICH IS THE Ratio of M15 Grade of concrete i.e Answer is (C). |

Dinesh Kumar said: (Oct 3, 2014) | |

This is the wrong answer 1:2:4 is correct. |

Vikash Mehta said: (Oct 17, 2014) | |

1:2:4 is correct answer for M15 Grade because 1:1:2 for M25 Grade. |

Hutendra Singh said: (Nov 19, 2014) | |

Yes 1:1:2 ratio only for M-25 & M-15 ratio is 1:2:4. |

Karmveer Dhayal said: (Dec 3, 2014) | |

Question is wrong because M150 is design mix concrete so by can not determine the actual ratio. It is vary according to our structure type and 1:1:2 is proportion of M25. |

Shridhar said: (Jan 31, 2015) | |

M 5 1:5:10. M 7.5 1:4:8. M 10 1:3:6. M 15 1:2:4. M 20 1:1.5:3. M 25 1:1:2. |

Amlan Debnath said: (Apr 14, 2015) | |

@Karmveer is right. M150 is design Mix Not Nominal mix so we cannot determined the actual ratio. & 1:1:2 is the proportion of M25. |

Kamlesh said: (Aug 8, 2015) | |

This is wrong answer correct as IS 456 is M 15-1:2:4. Please make the correction. |

Vishwash said: (Sep 25, 2015) | |

Answer is wrong. As per IS 456 Correct one is 1:2:4. |

Dimpi said: (Oct 3, 2015) | |

Answer is 1:2:4 as per IS 456. |

Surinder Kumar said: (Oct 20, 2015) | |

1:2:4 is correct answer of mix M150. |

Deepak Kumar said: (Oct 20, 2015) | |

Difference between M15 and M150? |

Basavraj said: (Dec 30, 2015) | |

Why always we should take 360 kg of cement only for 1 unit proportion? |

Mithu Mandal said: (Jan 7, 2016) | |

1:2:4 is right answer. 1:1:2 proportion is M25 grade concrete. |

Sunil Futane said: (Mar 2, 2016) | |

M 5 -> 1:5:10 M 7.5 -> 1:4:8 M 10 -> 1:3:6 M 15 -> 1:2:4 M 20 -> 1:1.5:3 M 25 -> 1:1:2 |

Liyaket Ali Batt said: (Mar 22, 2016) | |

1:2:4 is correct answer 1:1:2-M25. |

Nksahu said: (Apr 7, 2016) | |

Correct answer is 1:2:4. |

Radhe said: (Jun 24, 2016) | |

The answer should be option c) 1 : 2 : 4. |

Raja said: (Aug 8, 2016) | |

Couldn't relies on those answers. |

Swmkhwr Basumatary said: (Aug 19, 2016) | |

The answer should be 1 : 2 : 4. |

Akhil said: (Sep 8, 2016) | |

M15 - 1:2:4, M25 - 1:1.5:3. |

Shyam Lal Yadav said: (Oct 2, 2016) | |

It is 1 : 2 : 4. |

Adeel Abdullah said: (Oct 5, 2016) | |

It should be 1 : 2 : 4. |

Jitendra Ganjhu said: (Oct 21, 2016) | |

1:2:4 is M15 and M25 is 1:1:2. |

Mohan B said: (Nov 8, 2016) | |

Concrete Grade Proportion of Cement : Sand : Stone pieces. Expected Compressive Strength at 28 days. M100 ---> 1 : 3 : 6 10 N/mm^2 or 100 Kg/cm^2. M15 or M150 ---> 1 : 2 : 4 ---> 15 N/mm^2 or 150 Kg/cm^2. M20 or M200 ---> 1 : 1.5 : 3 ---> 20 N/mm^2 or 200 Kg/cm^2. M25 or M250 ---> 1 : 1 : 2 ---> 25 N/mm^2 or 250 Kg/cm^2. |

Gowtham Reddy said: (Nov 8, 2016) | |

M150 means the concrete having the compressive strength of 150 kg/sq.cm. |

Sandeep Dwivedi said: (Nov 13, 2016) | |

The correct answer is 1 : 2 : 4. |

Shiv said: (Nov 16, 2016) | |

This is the answer for the question "M25 grade of concrete?". |

Soudip said: (Nov 30, 2016) | |

It should be 1 : 2 : 4. |

Niraj Kumar said: (Dec 9, 2016) | |

Grade of M15 or M150 is 1:2:4. |

Anil Kumar said: (Dec 27, 2016) | |

Ans is -1:2:4. M25 - 1:1:2 M20 - 1:1.5:3 M15 - 1:2:4 M10 - 1:3:6 |

Patel Nirav said: (Dec 29, 2016) | |

1 : 2 : 4 as per IS 456. |

Vineet Kumar said: (Dec 30, 2016) | |

1 : 2 : 4 is the right answer. |

Shyopal Meena said: (Jan 5, 2017) | |

1:2:4 is the correct answer. |

Parimal Biswas said: (Jan 29, 2017) | |

I think C is the correct answer. |

T Jogeshwar Rao said: (Feb 20, 2017) | |

This is a wrong answer the right answer is 1:2:4 M15. |

Shyamdev Mandal said: (Mar 2, 2017) | |

According to IS456, M150 is 1:2:4. But how 1:1:2 is correct? Explain. |

Gautam said: (Mar 23, 2017) | |

@Shyamdev. The correct answer is 1:2:4. |

Vivek Yadav said: (Apr 10, 2017) | |

For M15 - 1:2:4. |

Yogendra Yadav said: (Apr 15, 2017) | |

M15 1 : 2 : 4 is the correct answer. |

Naresh Kumar said: (Apr 26, 2017) | |

M15 - 1 : 2 : 4 is correct. |

Rasheed said: (May 10, 2017) | |

The mix15 is 1:2:4. |

Mahesh Sharma said: (May 15, 2017) | |

The Ratio of M-15 is to 1:2:4. As per code IS456. |

Arpit said: (May 19, 2017) | |

The correct answer is 1 : 2 : 4. |

Vipin Kumar said: (May 19, 2017) | |

M15 grade concrete - 1 : 2 : 4. |

Kishan said: (May 21, 2017) | |

It is 1 : 2 : 4. |

Sunil Kimar Swain said: (Jun 7, 2017) | |

The correct answer is 1:2:4. 1:1:2 for m25 grade. |

Vasantha Devi said: (Jun 18, 2017) | |

Answer C is correct. |

Nagaraja K said: (Jul 16, 2017) | |

It is m15 1:2:4 min grade of concrete to be used in RCC work. |

Vivek said: (Aug 16, 2017) | |

1:2:4 is the correct answer. |

Ankit Jaiswal said: (Aug 26, 2017) | |

Answer will be none of these, because above M25 as per Indian Standard are mix design, not nominal mix it. It uses, wherever we need to achieve desired strength as per project or clients need. |

Vineet Kumar said: (Sep 29, 2017) | |

No, the Right answer is 1:2:4. |

Juliestar said: (Oct 9, 2017) | |

M15 - 1:2:4. |

Asraf Ali said: (Oct 29, 2017) | |

Answer is wrong. Correct answer is (c) 1:2:4. |

Neeraj Yadav said: (Nov 13, 2017) | |

Right answer is 1:2:4. |

Jayasriram Bariki said: (Nov 22, 2017) | |

I think the question is wrong. Because M150 grade concrete has no nominal mix. It is in design mix. |

Iftekhar Islam said: (Dec 19, 2017) | |

The answer will be [C] 1:2:4. |

Hanshraj Maholiya said: (Dec 22, 2017) | |

Correct answer is 1:2:4. |

Nagur Shaik said: (Jan 4, 2018) | |

It should be 1:2:4. |

Deepak Baswal said: (Jan 6, 2018) | |

(IS 456-1964) = IS 456-1978)-------->Ratio. M50 = M 5------------------- -> 1:5:10. M75 = M7.5 -------------------> 1:4:8. M100 = M 10 ---------------------> 1:3:6. M150 = M 15 --------------------> 1:2:4. M200 = M 20----------------- -> 1:1.5:3. M250 = M 25 ------------------> 1:1:2. |

Aktar Hussain said: (Jan 7, 2018) | |

1:2:4 m150 it is right 1:1:2 m25 error answers. |

Rahul Gupta said: (Jan 11, 2018) | |

The given answer for a question of M25 but it ask M15 so Given answer is wrong correct Answer is 1:2:4. |

Adi said: (Jan 22, 2018) | |

1:2:4 is the correct answer. |

Mohit said: (Feb 14, 2018) | |

M15 =1:2:4. |

Varsha said: (Mar 6, 2018) | |

It is 1:2:4. |

V.Manjunatha said: (Mar 21, 2018) | |

M 5=1:5:10 M 7.5=1:4:8 M 10=1:3:6 M 15=1:2:4 M 20=1:1.5:3 M 25=1:1:2. As per IS 456-2000 code. |

Devender said: (Mar 22, 2018) | |

M15 = 1 : 2 : 4. |

Deshrajmeena said: (Mar 31, 2018) | |

1:2:4 => m15. |

Vijay Meena said: (May 29, 2018) | |

M15 = 1:2:4 is right. |

Sameer said: (Jun 22, 2018) | |

The Correct answer is 1:2:4. |

Subah Bhalavi said: (Jul 14, 2018) | |

This is wrong answer because M25 - 1:1 & M15grade - 1:2:4. |

Raj said: (Jul 31, 2018) | |

As per IS 456-2000. M 5 =1:5:10. M 7.5 =1:4:8. M 10 =1:3:6. M 15 =1:2:4 Ans. M 20 =1:1.5:3. M 25 =1:1:2. |

Weer said: (Aug 23, 2018) | |

The Answer is M150~~1:2:4. |

Sridhar said: (Sep 6, 2018) | |

It is M15 grade so the proportion is 1:2:4. |

Kesavan Civil said: (Sep 9, 2018) | |

M150 means 150 kg/cm2 as per IS 456:1978. After revision IS 456:2000 IS M15. So, the correct option is 1:2:4. |

Shweta said: (Sep 26, 2018) | |

M15 to M150 grade = 1 : 2 : 4 is the right answer. |

Ajay Tyagee said: (Oct 17, 2018) | |

The corrent answer 150 = 1 : 2 : 4. |

Ashish Kapase said: (Jan 5, 2019) | |

M15 is 1 2 4. |

Jagdish said: (Feb 26, 2019) | |

1 : 2 : 4 is the correct ratio. |

Saran said: (Mar 4, 2019) | |

1:2:4 is the correct ratio. |

Anjana said: (Mar 19, 2019) | |

1 : 3 : 6 is the correct answer. |

Abdul Latif said: (Apr 7, 2019) | |

M 15 mix = 1:3:6. |

Farid Ansari said: (May 9, 2019) | |

M-15 = 1 : 2 : 4. |

Shiv Kumar Rauniyaar said: (Jul 5, 2019) | |

M25 = m250 ratio is 1:1:2. m15 = m150 ratio is 1:2:4. So, the ans is C. |

Ranodip said: (Aug 11, 2019) | |

M10= 1:3:6. M15= 1:2:4. M20= 1:1.5:3. M25= 1:1:2. So, the answer is option C. |

Sachin Kumar said: (Aug 19, 2019) | |

M5 = 1:6:12. M7.5 = 1:4:8. M10 = 1:3:6. M15 = 1:2:4. M20 = 1:1.5:3. M25 = 1:1:2. |

Harish said: (Aug 28, 2019) | |

C will be the correct answer. |

Zahid Wali said: (Sep 10, 2019) | |

C Is correct. M150 = 1:2:4. |

Anand Ratan said: (Dec 12, 2019) | |

M 5 = 1:5:10 M 7.5 = 1:4:8 M 10 = 1:3:6 M 15 = 1:2:4 M 20 = 1:1.5:3 M 25 = 1:1:2 M 30 = 1: 1:3 Correct answer is C . |

Alok Kumar said: (Jan 14, 2020) | |

The correct answer is 1:2:4. |

Jahidul Islam said: (Apr 4, 2020) | |

The correct answer is M15=1:2:4. This is not correct M15=1:1:2. |

Girishkumar Gange said: (Oct 30, 2020) | |

Option C is Correct, Mix 15 fck is 1:2:4. |

Muskan said: (Dec 26, 2020) | |

1:2:4 is the correct option. |

Muskan said: (Dec 26, 2020) | |

1:2:4 is the correct option. |

Bhavya Dl said: (Jan 22, 2021) | |

M10 - 1:3:6. M15 - 1:2:4. M20 - 1:1.5:3. M25 - 1:1:2. 1:4:8 M30 - 1:5:10 1:6:12. M35 - post-tensioned prestressed concrete. M40 - pre-tensioned prestressed concrete. |

Amit Kumar said: (Feb 5, 2021) | |

M150 grade is not a nominal mix, it's a design mix which is batched by weight so the answer would be E. |

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