Three 100*200 mm cylindrical concrete specimens were tested for 28 days compressive strength and show 25.5 MPa, 28.6 MPa and 24.8 MPa compressive strength.   a) What is the average compressive strength of this concrete? b) What is the approximate tensile strength of this concrete?

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Q: The following table represents a concrete mixture that has not been completely proportioned. The…

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