1 for specific request mail
ACI Concrete Field Testing Technician- Grade I
Questions and Correct Answers | Latest Update
The sensor of the temperature measuring device shall be submerged a
minimum of _____ in. [_____mm] into the freshly mixed concrete.
Ans: 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 _____.
Assignment Expert
Ans: 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
Guru01 - Stuvia
The temperature measuring device shall be calibrated _____, or whenever
there is a question of _____.
Ans: Annually, accuracy
2026
The temperature of concrete may be measured in a wheelbarrow. True or
False?
©
Ans: True
The temperature of concrete may be measured in a wall form. True of
False
Ans: True
A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temperature. True of False?
Ans: False
What must be done to the sample container prior to sampling the
concrete?
Ans: Dampen (with water)
, 2 for specific request mail
What must be done to the concrete surrounding the temperature
measuring device after the device is submerged in the fresh concrete.
Ans: 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?
Ans: At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Assignment Expert
Ans: Reporting of temperature
Guru01 - Stuvia
The temperature of concrete is reported to the nearest _____ degrees F
[_____ C]
Ans: 1 degree F [0.5 C]
2026
According to ASTM C1064, what is one reason to take the temperature of
concrete?
©
Ans: 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?
Ans: False
The sample of concrete used for temperature determination must be
rodded 25 times. True or False?
Ans: False
Sampling by this method is required when tests are to be made to
determine _____ with specification requirements.
, 3 for specific request mail
Ans: Compliance
This method covers sampling from four types of mixtures which are
_____, _____, _____, and _____.
Ans: 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.
Ans: 15
Assignment Expert
Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True of False?
Guru01 - Stuvia
Ans: True
The maximum elapsed time allowed between obtaining the final portion
of the composite sample and beginning the tests for slump, temperature,
2026
and air content is _____ minutes.
©
Ans: 5
The molding of strength test specimens shall begin within _____ minutes
after fabricating the composite sample.
Ans: 15
The concrete sample must be protected from contamination and _____.
Ans: Rapid evaporation
The minimum size sample for making strength test specimens is _____.
Ans: 28 L (1ft^3)
ACI Concrete Field Testing Technician- Grade I
Questions and Correct Answers | Latest Update
The sensor of the temperature measuring device shall be submerged a
minimum of _____ in. [_____mm] into the freshly mixed concrete.
Ans: 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 _____.
Assignment Expert
Ans: 1 degree F [0.5 C], 30 degrees F to 120 F [0 C to 50 C]
Guru01 - Stuvia
The temperature measuring device shall be calibrated _____, or whenever
there is a question of _____.
Ans: Annually, accuracy
2026
The temperature of concrete may be measured in a wheelbarrow. True or
False?
©
Ans: True
The temperature of concrete may be measured in a wall form. True of
False
Ans: True
A composite sample of concrete is required even if the only purpose for
obtaining the sample is to determine temperature. True of False?
Ans: False
What must be done to the sample container prior to sampling the
concrete?
Ans: Dampen (with water)
, 2 for specific request mail
What must be done to the concrete surrounding the temperature
measuring device after the device is submerged in the fresh concrete.
Ans: 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?
Ans: At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Assignment Expert
Ans: Reporting of temperature
Guru01 - Stuvia
The temperature of concrete is reported to the nearest _____ degrees F
[_____ C]
Ans: 1 degree F [0.5 C]
2026
According to ASTM C1064, what is one reason to take the temperature of
concrete?
©
Ans: 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?
Ans: False
The sample of concrete used for temperature determination must be
rodded 25 times. True or False?
Ans: False
Sampling by this method is required when tests are to be made to
determine _____ with specification requirements.
, 3 for specific request mail
Ans: Compliance
This method covers sampling from four types of mixtures which are
_____, _____, _____, and _____.
Ans: 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.
Ans: 15
Assignment Expert
Portions of a composite sample shall be thoroughly remixed bfore
beginning tests on the sample. True of False?
Guru01 - Stuvia
Ans: True
The maximum elapsed time allowed between obtaining the final portion
of the composite sample and beginning the tests for slump, temperature,
2026
and air content is _____ minutes.
©
Ans: 5
The molding of strength test specimens shall begin within _____ minutes
after fabricating the composite sample.
Ans: 15
The concrete sample must be protected from contamination and _____.
Ans: Rapid evaporation
The minimum size sample for making strength test specimens is _____.
Ans: 28 L (1ft^3)
