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what is the rate of compressive machine in crushing concrete

what is the rate of compressive machine in crushing concrete

As per IS 456, the individual compressive value of a concrete cube should not beless than 75%of its grade. Example – If the concrete grade is M20, then the individual crushing value should not be less than 15 N/Sqmm. The individual crushing value difference between the cube should not be greater than 15%.

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