Quote:
Originally Posted by donnie
I wonder if the extreme cold has any effect on the concrete and does it take longer to cure and if so how much slower or faster does construction move?
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Cold temperatures are addressed with set accelerating admixtures in the concrete mix, natural gas heaters under the working deck (which is why you see the white plastic draped under the deck before the pour), and concrete blankets over the top of the pour usually just at the edges. You do not want the temperature of the concrete to change from warm to cold too quickly or it will crack.
However, the frigid temperatures of the last 2 days have effectively shut down concrete operations across the city. The men don't want to work in subzero wind chills.