Mary in PA
John had one of the concrete samples strength-tested at the concrete supplier. They put it in a hydraulic press and, well …PRESS. At first, nothing much happens, but then a low slow groan emanates from the machine (or sample?) and finally a loud sharp crack. The machine’s meter pegs out at the top psi before failure and we have our results.
We ordered a concrete strength of 4,000 psi for the slab. After 26 days of wet curing with average daily temps of 46 deg. F, the sample tested out at…
….drum roll please…….
So today (finally!) we can stop watering. John took the plastic off the slab and officially started drying out the slab in preparation for applying a sealer. It’s so nice to be done with the wet slab (and damp boots) and be one step closer to actually using the building!
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|The two containers at back were filled with concrete during pour for later strength testing.|