Concrete base problem in garage shop. Any construction folks?

Somewhere in the middle after I lifted building. Compacted 3/4 washed stone and floor was rock hard. Lastly, waiting on concrete to firm up. Finished off the floor with power trowel and light broom on ramp. I have the concrete wet and covered for a few days. I have to run the garage ceiling mounted heater again tonight since it’s going to get down to 30 degrees. I’ll post the finished product when the tarps and plastic come off. Craig

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