hi just a quick question,having done materials labs we came up with a figure of 275.8kN for the compression strength of a cube of concrete acting over an area of 150mm x 150mm. i want to convert this compressive strength to the standard N/mm^2 units.To do this i multiplied 275.8 * 1000 and divided by(150*150) & got an answer of 12.26N/mm^2.Is this correct procedure, as the value seems extremely low,or did we just make exceptionally weak concrete?the test was done after only 7 days though so maybe this accounts for the low stength value?any opinions,suggestions welcome(adsbygoogle = window.adsbygoogle || []).push({});

thanks debs

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# Concrete compression

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