### what is the compressive strength of m40 concrete

Aug 14, 2017 Strength of the M40 concrete can''t be 100Mpa. because, 40 in M40 itself is the compressive strength of concrete (characteristic strength after 28 days of . Compressive Strength of Concrete Cubes Lab Test Procedure. The Compressive strength of concrete .

### Determination of appropriate mix ratios for concrete ...

For example, the concrete grade/strength class C20/25 concrete is expected to have a minimum cylinder crushing strength of 20MPa and the same C20/25 concrete is expected to have a minimum cube crushing strength of 25MPa. Concrete grade/strength class C16/20 with a minimum cylinder strength of 16MPa or a minimum cube strength of 20MPa is the ...