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 building.

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 value 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.

Now let us move toward where we can generally used the different types of mix ratio of concrete in residential building.

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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 – M5 & M7.5**

Proportion for M5 :- 1:5:10 (Cement:Sand:Aggregate)

Proportion for M5 :- 1:4:8 (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**

Proportion :- 1:1:2 (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.

**Thank you.**