ACI Concrete Field Testing Technician- Grade I Questions & Answers 2025 The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete. - ANS-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 _____. - ANS-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 _____. - ANS-Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - ANS-True The temperature of concrete may be measured in a wall form. True of False - ANS-True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature. True of False? - ANS-False What must be done to the sample container prior to sampling the concrete? - ANS-Dampen (with water) What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete. - ANS-
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