Montana Test Results

Powerblanket® Product Tested in Montana Winter

Test performed by a building inspector

Concrete poured 10 a.m. Tuesday, February 14

Mix:

  • 5.5 sack
  • Type 3 concrete
  • 1.5% non–calcium accelerator
  • Hot water 110°-120° Fahrenheit

Air temperature at pour time, 30°F.
Blankets applied at 4:40 p.m.

Results

Outside Temperature Under Thawing Blanket* Under Curing Blanket*
Wed (11:00 a.m.) 19°F 71°F 64°F
Thurs (8:30 a.m.) 4°F 68°F 66°F
Friday morning 11°F 70°F 66°F

*Refers to blankets that are no longer used; replaced by Multi Duty blankets.

Note: all blankets were covered with a layer of regular concrete blankets.