Why we use 150 mm size cube for compressive strength testing

Why we use 150 mm size cube for compressive strength testing concrete cube dimensions concrete cube test which measures the compressible cube strength of BS EN 12390-1:2000 cube test procedure pdf For standard cylinders, this ratio is two and as such concrete cylinder strength is only about times the cube strength whole heightlateral dimension is

cube test procedure pdf In this work on hollow sandcrete cubes, Okonkwo found that void 45° orientation have high strength values Strength calculation for hollow concrete units

cube testing report size concrete cubes tested at 28 days Why do we test at 7, 14 & 28 days? Concrete is a macro content with Sand, Cement, & Coarse aggregate as its micro In technical point of view, Compressive Strength of concrete is defined as the Characteristic strength of 150mm size concrete cubes @28 days