ASTM C1064 – Temperature
Temperature Measuring Device must: Temperature Measuring Device must:
- – Measure to within +/- 1 degree Fahrenheit
- – Measuring device must read between 30 to 120 degrees
- – Have 3-inches concrete cover in all directions
- – Be inserted a minimum of 3-inches
- – Be left in concrete a minimum of 2 min., maximum of 5 min.
- – Be calibrated annually, or if there’s a question of accuracy
- – Not vary by more than 1 degree Fahrenheit when verified against a reference thermometer
ASTM C231 – Air Content by Pressure Method
ASTM C173 – Air Content by Volumetric Method
ASTM C138 – Density (Unit Weight), Yield, and Air Content
ASTM C172 – Sampling Fresh Concrete
ASTM C31 – Making & Curing Concrete Specimens in the Field