weight of sand in m of m concrete
Concrete Mix Design . May 17, 2017As per IS456:2000, Different grades of concrete are classified into M5,, M10, M15 etc., whereas M stands for Mix and the number behind M stands for Characteristic Compressive strength(fck) of the concrete in N/mm 2 28 days when checked with 15cm15cm15cm cube in direct compression test.