### Concrete mix design - Civil Construction

M15: 1:2:4: M20: 1:1.5:3: M25: 1:1:2: The proportion given is the ratio of cement, fine aggregate and coarse aggregate. Above M25, we can't use nominal mix, we should go through design mix. Concrete mix design: Here we discuss concrete mix design based on the indian standard. Some of the codes used for concrete mix design are IS 456:2000 and IS 10462:2019. Step 1: Calculate target strength ...