[Keith N]

How late in the year do most concrete companies poor driveways? I have a potential paver job coming up but they want a driveway poured as well. I tried to sell a paver drive but it's just not in the budget. I know you can add calcium and other additives to set it quicker. I'm just wondering about liability issues since it takes 4 weeks to fully cure. I'm in St.louis MO so it is hard to say what the weather will be like these days.

[AZTLANLC]

Most people says that as long as the temperatures don't get below freezing you can still do it,they recommend to cover the concrete overnight also, I have seeing many companied in my area pour foundations an a 30 degrees days.
For me as soon as I'm in doubt I don't do it.

[tom]

Hey Keith, I was born and raised in St. Louis so I know how strange the weather can be but have been living in Colorado for almost 7 years. We can pour concrete pretty much all winter long here. You can use additives, though you do want to stay away from ones containing calcium (if your using steel) if you can.
You definitely have to cover it with concrete blankets it the temp is going to be below freezing. If it is allowed to cure without being exposed to freezing temps it should cure just fine. The size of the project and the type of finish will also be a factor.
I'd contact a local concrete company that's been around for a while and see what they have to say.

[Extraordinary]

Most DOT and municipalities spec 40° and rising.

[Keith N]

The project will probably wait until spring. The customer has been dragging his feet since May, so I'm holding off.