TAB, you know concrete and construction, so I want your opinion on this. Yesterday I had my driveway widened. The whole pour was around 8 yards total. The guy said the stuff he poured was 3,500 PSI concrete. (The receipt from the concrete outfit confirmed this). They started pouring around 7:00 AM. The concrete truck pulled away and left from my house around 8:30 AM yesterday morning. It was cloudy and around 74 degrees. The humidity was 25%.
The crew did a real nice job finishing it. And they pulled the forms, cleaned and packed up, and left around 11:00 AM. Around 4:30 PM we got a light sprinkle of rain. Just enough to barely wet the concrete. Overnight we got a few more sprinkles. All total not even a 1/10th of an inch of rain total. This morning the new poured concrete was wet to the touch, and seemed hard. I don't know $h!t about concrete. Do I have anything to worry about?