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Pouring concrete I need to pour a concrete floor in my garage (already up...a steel buidling actually with no door yet) but the temperatures in Kentucky are the 20's and 30's right now. Can I still pour the concrete, do I need to put an additive in the mix, and how long will it take to cure in these weather conditions? I need as much information as you can provide. Many thanks!

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I live in N.W. Wisconsin and they do pour cement in 20-30 degree weather. They have the concrete supplier mix with hot water and also add calcium chloride. The ground must be thawed with no frost in it. They pour the cement and if finish it and then cover it with tarp blankets. This does add cost to the project and if you can wait for warmer weather I highly recommend you do.
Hope this helps.

Posted on Apr 02, 2015

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Thanks for the information.

Posted on Oct 07, 2016

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In Iowa they can pour concrete when itmis 32deg., however they tend to button up the basement and put in temp. Heat to help finish and cure the concrete

Posted on Jan 30, 2015

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This is your own house, I would wait until the temps are above freezing. 32Deg. Maybe 30 is OK,. I think anti frost addiditives are not that effective and weaken the concrete. Pouring at any temp above freezing is good, the concrete cures slowly giving yu time to finish it to your liking. Concrete cures in 28 Days.

If the temp goes a bit below freezing say over night, no problem as concrete makes heat as it cures. You can also cover with a plastic sheet. You do not want prolonged below freezing temps on the concrete is the bottom line. Just wait a bit to be sure and there are no decisions to make

good luck

Posted on Mar 19, 2009

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