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Pcc 1 3 6 Crusing Strength

In order to get a relatively quicker idea of the quality of concrete, optional test for 7 days compressive strength of concrete be carried out.6 cubes of 150 x 150 x 150 mm size the nominal size of aggregate does not exceed 38 mm shall be cast, 3 for 7-days testing and 3 for 28-days testing.A set of.