ACI Concrete Field Testing Technician- Grade I Exam Questions And Answers

ACI Concrete Field Testing Technician- Grade I Exam Questions And Answers 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 Gently press the concrete around the temperature measuring device at the surface of the concrete