ACI Concrete Field-Testing Technician- Grade I Study Guide | 100% Correct Answers | Verified | Latest 2024 Version

The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete. - 3 in. [75 mm] The temperature measuring device shall have a capacity of measuring temperature of freshly mixed concrete to +- _____ degrees F [+- _____ C] throughout a range of _____. - 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C] The temperature measuring device shall be calibrated _____, or whenever there is a question of _____. - Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - True The temperature of concrete may be measured in a wall form. True of False - True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature. True of False? - False What must be done to the sample container prior to sampling the concrete? - Dampen (with water) What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete. - Gently press the concrete around the temperature measuring device at the surface of the concrete How long must the temperature measuring device remain in the freshly mixed concrete? - At least 2 minutes but not more than 5 minutes After the temperature of the concrete is read, what is required? - Reporting of t