Grades of Concrete

How to know proportions of cement, sand, aggregate in different types of grades like M5, M10, M20, M30?

Questions by kr.madala

Showing Answers 1 - 20 of 20 Answers


  • Feb 10th, 2010

See there is no fixed mix ratio. It depends on property of materials used in the mix. we have to perform a mix design based on standard procedures like ACI method, DoE method, BIS method and so on.

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  • Oct 3rd, 2011

there is a process called sieving of sand. if the proportion of mixture is passed through the 4.75mm i.s. seive,the proportion passed out can be termed as sand the proportion that is retained on the sieve can be termed as gravel. this is valid if the proportion is the mixture of only sand and gravel.

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  • Nov 3rd, 2014

M5: 1:4:8
M10: 1:3:6
M15: 1:2:4
M20: 1:1.5:3
M25: 1:1:2

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Anil kumar

  • Nov 9th, 2014


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s.sethu manoharan

  • Nov 29th, 2014

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

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Balasubrahmanyam gvjb

  • Dec 15th, 2014

How is calculate of the cement in kgs in grade of concrete

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Amanat Said

  • Dec 19th, 2014

this is simple, we easily calculate it by volume, if we take M10 concrete the ratio of M10 is 1:2:4 , in this proportion 1 is Cement, 2 is fine aggregates and 4 is course aggregates, we calculate it in 1 Cum of concrete easily. first calculate the dry material of 1 Cum concrete and then multiply it with the ratio of material and divided it to 7... 7 is the sum of 1+2+4...

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  • Dec 31st, 2014

inorder to calculate the quantities u should know the design mix proportion ratiao by volume.i.e IF M25 design mix then proportion ratio is1:1 1/ that we can calculate the quantity of diff materials

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  • Jan 6th, 2015

You can calculate easy. Take M25 grade for 1:1:2.    
(0.45/1*1440)=648 kg /m3

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dinesh yadav

  • Feb 19th, 2015

43.5/total sum of ratio=no. of cement bag

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  • Feb 24th, 2015


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  • Apr 6th, 2015

How to calculate 43.5 Mr Dinesh Yadav can you explain in details..thanks you

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  • May 23rd, 2015

ratio of m35 concrete

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  • Jul 9th, 2015

Yes this is ans we can conform that the cement is in which grade by this process take a pinch of cement sample and observe it smoothness if it is more fine then u can say itis m25grades like this all grades are known

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  • Aug 20th, 2015

Thanks for the contribution. Meanwhile, what does he 0.45 stand for? How did you arrive at 648kg/m3? i want to presume the 1440 is taken as the density of Cement.

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  • Sep 3rd, 2015


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Abhinab Das

  • Sep 15th, 2015

Let the mix in the prop. 1:2:4... Ok, now let total qty. be 1 cum.. Now we have to find the qty. of cement is (1/(1+2+4))*1 cum. = let .14 cum. Now we know that 1 bag of cement is 50 Kg i.e. .0347 cum, Now we have divide the qty. of cement by 1 bag of cement qty. i.e. =.14/.0347=4.034 nearly equal to 4 bags of cement

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  • Sep 15th, 2015

M5---- 1:5:10
M10--- 1:3:6
M15--- 1:2:4
M20--- 1:1.5:3
M25--- 1:1:2

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Khileshwar singh

  • Oct 11th, 2015

For determine the quantity of materials for 10 cu.m, concrete -
the standard value 15.2 is divided by the sum of the given proportion of which gives the quantity of materials in cu.m
for M15 Cement=15.21+2+4 = 2.20
sand=2×2.20, gravel=4×2.20

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  • Oct 22nd, 2015

What is the quantity of cement, sand & granite on mix ratio 1:2:4

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