For concrete with aggregates less than 3 inches, the thermometer must remain in the fresh concrete sample a minimum of 5 minutes or until the temperature reading stabilizes. (T or F) False (2-5 minutes) The temperature measuring device must be accurate to within 0.1 degree. (T or F) False The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete throughout a range of _____ to _____ degree F ( ______ to ______ degree C) 30 to 120 degree F (0 to 50 degree C) A composite sample is not needed if only the temperature test is being run. (T or F) True The temperature of fresh concrete in a placement must be measured by inserting a thermometer into the top six inches of concrete. (T or F) False (3 in.) The temperature of the concrete is recorded to the nearest ______ degree F (______ degree C) 1 degree F (0.5 degree C) ASTM C1064 states the container used to measure temperature of concrete must be large enough to provide at least 5 inches of concrete around the sensor. (T or F) False (The container shall be large enough to provide at least 75mm (3 in) of concrete in all directions around the sensor of the temperature measuring device) Calibrate the temperature measuring device at least __________, or whenever there is a question of accuracy. Annually After the thermometer is placed in the concrete: Gently press concrete around the thermometer