Hello, friends in this article I am going to tell you about how to use mix of concrete-like M5, M10, M15, M20, or M25 in residential buildings.
Friends first of all I would like to tell you what is M5, M10, M15, M20…..etc. Here M is grade of mix ratio and numerical values 5, 10, 15, 20…etc are strength of concrete in KN/mm². So, if we have M20 grade concrete then we can say that its grade is 20KN/mm².
And mix proportion is 1:1.5:3 which indicates that in this types of mix ratios 1 part is cement, 1:5 part is sand and 3 part is aggregate has been used to make this concrete.
Mix | Proportion | Uses |
M5 | 1:5:10 (Cement:Sand:Aggregate) | For floor PCC or RCC Wall |
M7.5 | 1:4:8 (Cement:Sand:Aggregate) | For Supportive foundation, cover slab of single room for domestic animals. |
M10 | 1:3:6 (Cement:Sand:Aggregate) | For Supportive foundation, cover slab of single room for domestic animals, used for PCC floor where movement of load mostly occurs. |
M15 | 1:2:4 (Cement:Sand:Aggregate) | For Slab, Beam, Column, Stair, etc. Also used for a load-bearing structure like water tank stain |
M20 | 1:1.5:3 (Cement:Sand:Aggregate) | For Column, Beam, and slab for a multistorey building. |
M25 | 1:1:2 (Cement:Sand:Aggregate) | For Heavy load, Bridge pile, RCC Road, etc. |
M30 | 1:0.75:1.5 (Cement:Sand:Aggregate) | For Heavy load, Bridge pile, RCC Road, etc. |

Now let us move toward where we can generally used the different types of mix ratio of concrete in residential building.
Read more,
Different between segregation and bleeding in concrete
Different Heat treatment of steel
Different types of defect in timber
Here I will discuss from M5 grade of concrete to M25 grade of concrete. There are also other higher strength of concrete but here I will discuss this much only.
So let’s start, Use of M5, M10,M15,M20 and M25 in Residential building
1) Mix – M5
Proportion :- 1:5:10 (Cement:Sand:Aggregate)
Uses :-
This types of mix are used for floor PCC or RCC Wall.
2) Mix – M7.5 & M10
Proportion for M7.5 :- 1:4:8 (Cement:Sand:Aggregate)
Proportion for M10 :- 1:3:6 (Cement:Sand:Aggregate)
Uses :-
This types of mix are used for Supportive foundation, cover slab of single room for domestic animals, used for PCC floor where movement of load are mostly occurs.
3) Mix – M15
Proportion :- 1:2:4 (Cement:Sand:Aggregate)
Uses :-
This types of mix are used for Slab, Beam, Column, Stair etc. Also used for load bearing structure like water tank stain.
4) Mix – M20
Proportion :- 1:1.5:3 (Cement:Sand:Aggregate)
Uses :-
This types of mix are used for Column, Beam and slab for multistorey building.
5) Mix – M25 and M30
Proportion :-
M25-1:1:2 (Cement:Sand:Aggregate)
M30 -1:0.75:1.5 (Cement:Sand:Aggregate)
Uses :-
This types of mix are used for Heavy load, Bridge pile, RCC Road etc.
So, friends, I hope the article about “Use of different grade of concrete in Residential building” remains helpful for you.
Read Also,
Top 5 Cause of Honeycomb in Concrete – Remedies of Honeycomb