### COMPRESSIVE STRENGTH OF CONCRETE CUBES

Oct 14, 2019· Average of there specimens gives the crushing strength of concrete. The strength requirements of concrete. CALCULATIONS. Size of the cube =15cm x15cm x15cm. Area of the specimen (calculated from the mean size of the specimen )=225cm 2. Characteristic compressive strength(f ck)at 7 days = Expected maximum load =fck x area x