I just fixed a broken corner on my concrete steps with (2) of the small Quickrete containers. It is quick setting material, and the temperature is
60 degrees and dry. I shaped a beautiful corner and it formed nicely.Then...about two hours later I noticed vertical and horizontal cracks in the patch. One railing leg goes into the patch, but no one went near the railing. How could it crack that soon? It was even still the dark gray color for the most part.
I'm so disappointed about this. I thought I did very well, but now I don't know what to do. Does anyone know how/why this happened??
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Dave in Minneapolis