What is the ratio of the component in grade M20 concrete?(a) 1:3:6(b) 1:1.5:3(c) 1:1:2(d) 1:2:4The question was posed to me by my college director while I was bunking the class.My question is taken from Composition of Concrete in chapter Building Construction of Basic Civil Engineering

What is the ratio of the component in grade M20 concrete?(a) 1:3:6(b)

1.	What is the ratio of the component in grade M20 concrete?(a) 1:3:6(b) 1:1.5:3(c) 1:1:2(d) 1:2:4The question was posed to me by my college director while I was bunking the class.My question is taken from Composition of Concrete in chapter Building Construction of Basic Civil Engineering
Answer» Correct choice is (B) 1:1.5:3 The explanation is: Concrete is graded into many types as per IS 456-2000. M stands for mix and the number, say, 20 is a compressive strength after 28 DAYS in N/mm^2.Generally, M20 grade is used. The RATIO of cement: fine: coarse aggregate for M20 is 1:1.5:3.For M10 it is 1:3:6, M15 it is 1:2:4 and M25 it is 1:1:2.

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What is the ratio of the component in grade M20 concrete?(a) 1:3:6(b) 1:1.5:3(c) 1:1:2(d) 1:2:4The question was posed to me by my college director while I was bunking the class.My question is taken from Composition of Concrete in chapter Building Construction of Basic Civil Engineering

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