(11-06-2013, 04:33 PM)Ernesto Wrote: Hope those gas heaters are not propane. The exaust from propane has a high moisture content.
Yes it does! So does kerosene which you see as the white trails left in the sky by jets. It's moisture freezing in the cold dry air up there.
Temporary heaters also tend to contribute to elevated CO levels, increasing the carbonation at the concrete surface. I had a couple projects that had so much carbonated concrete due to unvented temporary heat that the concrete surface was soft and easily scratched with a pocket knife.
Concrete Answers for Flooring Problems