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procedure of cube crushing and compressive strength machine

Aug 26, 2021 The average of three specimens gives the crushing strength of concrete. The strength requirements of concrete. Calculations of Compressive Strength. Size of the cube =15cmx15cmx15cm. Area of the specimen (calculated from the mean size of the specimen )=225 cm2. Characteristic compressive strength(f ck)at 7 days = Expected maximum load =fck x

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