What was the temperature during the day of pour?
March 16 2017 looks like it got down to 27. The damage looks like it could be from freezing during the pour or within 48 hours.
I believe that the temp didn't dip below 55 (Fahrenheit) that day.
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We can never really tell him, but I’m putting my money on the coating being applied before moisture left the pour.
I fear that may be a real possibility... If that is the case, then once the temp fell down below freezing, maybe the water froze, then cracked the concrete.... thoughts???