Executive Construction
Executive Construction Interview Questions and Answers
Q1. Grade of concrete m15 ,m20 and m25
The grade of concrete refers to its strength and is denoted by the mix ratio of cement, sand, and aggregate.
M15 grade concrete has a mix ratio of 1:2:4 (cement:sand:aggregate) and a compressive strength of 15 MPa.
M20 grade concrete has a mix ratio of 1:1.5:3 and a compressive strength of 20 MPa.
M25 grade concrete has a mix ratio of 1:1:2 and a compressive strength of 25 MPa.
The higher the grade, the stronger the concrete.
These grades are commonly used in construction for vari...read more
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