ACI CONCRETE TESTING TECHNICIAN- GRADE I
EXAM 120 QUESTIONS & CORRECT ANSWERS
LATEST 2026
The temperature of concrete may be measured in a wall form. True or False -
ANSWER-True
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. into the freshly mixed concrete. - ANSWER-3 in.
Portions of a composite sample shall be thoroughly remixed bfore beginning tests
on the sample. True or False? - ANSWER-True
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, 30 degrees F to 120 F
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
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature. True or 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 -
ANSWER-1 degree F
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 or False? - ANSWER-False
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
EXAM 120 QUESTIONS & CORRECT ANSWERS
LATEST 2026
The temperature of concrete may be measured in a wall form. True or False -
ANSWER-True
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. into the freshly mixed concrete. - ANSWER-3 in.
Portions of a composite sample shall be thoroughly remixed bfore beginning tests
on the sample. True or False? - ANSWER-True
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, 30 degrees F to 120 F
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
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temperature. True or 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 -
ANSWER-1 degree F
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 or False? - ANSWER-False
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
