houghton work/weather camshot

[draboo]

heres the site i ve been working on for the last 6 months. this is the computer science building.we are almost finished with pouring concrete walls(radiused) .there was no work today. too cold and windy.(-5F,windchill -35F)

Dude, Marquette got HAMMERED yesterday. I couldn't see more than two feet in front of me the whole walk from the LRC to my car. I left the building looking mostly black, I got to my car looking mostly white. I love this weather.


Not.

[desmocat]

Dude, how do you pour crete when it's below freezing? I thought that would mess it up somehow.

[no1_vern]

From: http://www.tx-taca.org/concretefaq.htm

Concrete will not set when the concrete temperature is below about 35F. Many times specifications will say something like "Concrete may not be poured when the temperature is 37F and falling." With heated water and aggregates, accelerating admixtures, and other methods, jobs can be poured below freezing, but it is more expensive. In most southern states there are so few freezing days that it is not worth it to try to pour when the temperature is below freezing.

The guy next door building his house poured his footers then floor below freezing. He has something on it like sand or whatever for insulation.

Had sand under the concrete, or over it?

[draboo]

we hang insulated tarps from the top of the wall to the ground in a tent fashion from both sides,then put at least 2 good sized propane heaters under the tarps on each side and pour the heat to it for a few hours before we pour,all that nite and the next day. plus theres chloride added to the mix to hasten up the curing process. the walls are approx. 22 feet high.

costs a bit more for labor and propane(including labor for stomping around in the snow) but apparently the company figgers its worth it to get it done. personally,i d have shut the job down a few weeks ago and waited for spring.

[gbpec7]

man, I miss home this time of year