# What is m25 grade of concrete?

Different types of concrete grades and their uses

Concrete Grade Mix Ratio (cement : sand : aggregates) Compressive Strength
M15 1 : 2 : 4 15 MPa
M20 1 : 1.5 : 3 20 MPa
M25 1 : 1 : 2 25 MPa

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Concrete mainly composed of Cement,sand & aggregate (aggregate mainly responsible for strength whereas cement & sand responsible for binding of total volume. Coming to the question. M stands for mix of concrete. 25 stands for strength of concrete cube such as 25 (MPa Or N/mm2) after 28 days of curing.

Also, what is grades of concrete? Grade of concrete is the designation of concrete according to its compressive strength. Concrete grades are denoted by M10, M20, M30 according to their compressive strength. “Mix” is the respective ingredient proportions which are Cement: Sand: Aggregate Or Cement: Fine Aggregate: Coarse Aggregate.

Thereof, how do you calculate m25 concrete grade?

The formula for calculating the quantity of cement is,

1. cement = (dry volume of the concrete x cement ratio)/(sum of the ratio)
2. Dry volume of the concrete = wet volume of concrete x 1.54.
3. Mix ratio of M25 grade is 1:1:2 (cement:sand:coarse aggregates)
4. Assuming the volume of concrete as 1 m^3.

What is m30 grade of concrete?

M30 stands for the mix of concrete which after 28 days of curing will give the strength of 30 N/mm². Bascially M30 mix ratio is calculated by referring Is Codes and consideration of all the properties of sand, cement and coarse aggregate.

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