ACI CONCRETE FIELD TESTING TECHNICIAN- GRADE I
EXAM QUESTIONS AND WITH CORRECT ANSWERS 2025
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
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,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)
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
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, 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 False
The sample of concrete used for temperature determination must be rodded 25
times. True or False? - ANSWER False
Sampling by this method is required when tests are to be made to determine _____
with specification requirements. - ANSWER Compliance
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EXAM QUESTIONS AND WITH CORRECT ANSWERS 2025
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
mailto:https://www.stuvia.com/en-us/user/techgrades
,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)
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
mailto:https://www.stuvia.com/en-us/user/techgrades
, 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 False
The sample of concrete used for temperature determination must be rodded 25
times. True or False? - ANSWER False
Sampling by this method is required when tests are to be made to determine _____
with specification requirements. - ANSWER Compliance
mailto:https://www.stuvia.com/en-us/user/techgrades
