ACI CONCRETE FIELD TESTING
TECHNICIAN- GRADE I WITH
VERIFIED QUESTIONS AND
DETAILED ANSWERS RATED A+
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-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
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
This method covers sampling from four types of mixtures which are _____, _____, _____,
and _____. - answer-Stationary mixers, paving mixers, revolving drum mixers, and open
top mixers
The maximum allowable time between obtaining the first and final portions of a
composite sample is _____ minutes. - answer-15
Portions of a composite sample shall be thoroughly remixed bfore beginning tests on
the sample. True of False? - answer-True
TECHNICIAN- GRADE I WITH
VERIFIED QUESTIONS AND
DETAILED ANSWERS RATED A+
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-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
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
This method covers sampling from four types of mixtures which are _____, _____, _____,
and _____. - answer-Stationary mixers, paving mixers, revolving drum mixers, and open
top mixers
The maximum allowable time between obtaining the first and final portions of a
composite sample is _____ minutes. - answer-15
Portions of a composite sample shall be thoroughly remixed bfore beginning tests on
the sample. True of False? - answer-True
