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ACI Concrete Field Testing Technician- Grade I
EXAM (2026) UPDATE Verified Questions And
Answers | With 100% Correct Answers graded A+
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
pg. 1
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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
pg. 2
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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
The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes. ......ANSWER......5
pg. 3
ACI Concrete Field Testing Technician- Grade I
EXAM (2026) UPDATE Verified Questions And
Answers | With 100% Correct Answers graded A+
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
pg. 1
,2|Page
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
pg. 2
, 3|Page
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
The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes. ......ANSWER......5
pg. 3
