ACI CONCRETE FIELD TESTING TECHNICIAN EXAM QUESTIONS AND CORRECT ANSWERS 2025/2026

ACI CONCRETE FIELD TESTING TECHNICIAN EXAM QUESTIONS AND CORRECT ANSWERS 2025/2026 The sensor of the temperature measuring device shall be submerged a minimum of _____ in. [_____mm] into the freshly mixed concrete. - Answer -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 _____. - Answer -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 _____. - Answer -Annually, accuracy The temperature of concrete may be measured in a wheelbarrow. True or False? - Answer -True The temperature of concrete may be measured in a wall form. True of False - Answer -True A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine temperature. True of False? - Answer -FalseWhat must be done to the sample container prior to sampling the concrete? - Answer -Dampen (with water) What must be done to the concrete surrounding the temperature measuring device after the device is submerged in the fresh concrete. - Answer -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? - Answer -At least 2 minutes but not more than 5 minutes After the temperature of the concrete is read, what is required? - Answer -Reporting of temperature The temperature of concrete is reported to the nearest _____ degrees F [_____ C] - Answer -1 degree F [0.5 C] According to ASTM C1064, what is one reason to take the temperature of concrete? - Answer -Verify conformance to a specified requirement for temperature of concrete A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True of False? - Answer -Fal