Different types of Concrete Grades and their uses

Understanding Grades of Concrete

Based on the strength and composition of the concrete, the grades of concrete are set. After completion of 28 days of preliminary construction, the concrete attains it’s least strength. The grade of concrete is calculated with measuring unit MPa, where M signifies for mix and the MPa for the complete strength.

Concrete mixes are provided in ascending numbers of 5, starting at 10, and illustrate the compressive strength of the concrete as soon as 28 days are completed. As for example, C10 contains the strength of 10 newtons, C15 contains the strength of 15 newtons, C20 contains 20 newtons strength and so on.

Different mixes (M) are available in different mix proportions of the several elements of cement, sand and coarse aggregates. As for example, M20 is found in the corresponding proportion of 1:1:5:3. In the following table, other instances are given.


Concrete Grade Mix Ratio (cement : sand : aggregates) Compressive Strength
MPa (N/mm2) psi
Grades of Concrete
M5 1 : 5 : 10 5 MPa 725 psi
M7.5 1 : 4 : 8 7.5 MPa 1087 psi
M10 1 : 3 : 6 10 MPa 1450 psi
M15 1 : 2 : 4 15 MPa 2175 psi
M20 1 : 1.5 : 3 20 MPa 2900 psi
Standard Grade of Concrete
M25 1 : 1 : 2 25 MPa 3625 psi
M30 Design Mix 30 MPa 4350 psi
M35 Design Mix 35 MPa 5075 psi
M40 Design Mix 40 MPa 5800 psi
M45 Design Mix 45 MPa 6525 psi
High Strength Concrete Grades
M50 Design Mix 50 MPa 7250 psi
M55 Design Mix 55 MPa 7975 psi
M60 Design Mix 60 MPa 8700 psi
M65 Design Mix 65 MPa 9425 psi
M70 Design Mix 70 MPa 10150 psi


Selection of the proper concrete grade for the construction job:

Given below, the details of the preliminary concrete grades and their proper applications.


Suitable for patio slabs, pathways and non-structural work

Type: Domestic & commercial application


Effective for pavement kerbs and floor blinding

Type: Domestic & Commercial application


Ideal for domestic floors and foundations (where the structure bears light weight). Besides, it is perfect for workshop bases, garages, driveways and internal floor slabs.

Type: Domestic application


Suitable for being constructed in all areas. Multi-purpose concrete mix generally applied for foundations.

Type: Domestic & commercial application


Suitable for pathways and roadways (it belongs to the lowest grade concrete mix utilized for this purpose). It has good longevity as compared to the grades which are available earlier. It has strong resistance capacity against weather and can bear heavy road traffic.

Type: Commercial application


Ideal for commercial structures. This heavy concrete mix is normally applied for developing exterior walls and slabs, in addition to structural piling.

Type: Commercial application


Suitable for commercial construction sites as well as constructing foundations and beams for structural support and roads. C40 is the most long-lasting in this list and it can resist chemical corrosion. It is extensively utilized on farms where slurry could rust structures, or in septic tanks.

Type: Commercial application

Article Source: www.baseconcrete.co.uk

concrete grades