2025/2026 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. - 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 False
What must be done to the sample container prior to sampling the concrete? - answer
Dampen (with water)

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