Central Public Works Department Summer Intern Interview Questions and Answers

The ratio of M-20 concrete is 1:1.5:3 (cement:sand:aggregate).

• The ratio of M-20 concrete is 1 part cement, 1.5 parts sand, and 3 parts aggregate.

• For example, if you have 1 kg of cement, you will need 1.5 kg of sand and 3 kg of aggregate to make M-20 concrete.