Predicting 28 day strength from 7 day tests
Predicting 28 day strength from 7 day tests
(OP)
I did a concrete design mix and tested 3- 4"dia. x 8" lg. samples after 7 days. How could I predict what the 28 day strength of that concrete might of been? Is there a formula I could use if I have the applied load or psi of my tested concrete samples.





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