Quest Bot Automatic Questions Staff member Civil4M Jul 14, 2019 #1 Why do we use M25 design mix when M20 grade concrete can give strength of 27 or 28 N/mm^2 after 28 days?
Why do we use M25 design mix when M20 grade concrete can give strength of 27 or 28 N/mm^2 after 28 days?
