ACI Concrete Field Testing Technician- Grade
I Exam Questions And Correct Answers
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. [_____mm] into the freshly mixed concrete.
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 _____.
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 _____.
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
The temperature of concrete may be measured in a wall form. True of False
True
,A composite sample of concrete is required even if the only purpose for obtaining the
sample is to determine temperature. True of False?
False
What must be done to the sample container prior to sampling the concrete?
Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete.
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?
At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Reporting of temperature
The temperature of concrete is reported to the nearest _____ degrees F [_____ C]
, 1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of concrete?
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?
False
The sample of concrete used for temperature determination must be rodded 25 times.
True or False?
False
Sampling by this method is required when tests are to be made to determine _____
with specification requirements.
Compliance
This method covers sampling from four types of mixtures which are _____, _____,
_____, and _____.
Stationary mixers, paving mixers, revolving drum mixers, and open top mixers
I Exam Questions And Correct Answers
The sensor of the temperature measuring device shall be submerged a minimum of
_____ in. [_____mm] into the freshly mixed concrete.
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 _____.
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 _____.
Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False?
True
The temperature of concrete may be measured in a wall form. True of False
True
,A composite sample of concrete is required even if the only purpose for obtaining the
sample is to determine temperature. True of False?
False
What must be done to the sample container prior to sampling the concrete?
Dampen (with water)
What must be done to the concrete surrounding the temperature measuring device
after the device is submerged in the fresh concrete.
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?
At least 2 minutes but not more than 5 minutes
After the temperature of the concrete is read, what is required?
Reporting of temperature
The temperature of concrete is reported to the nearest _____ degrees F [_____ C]
, 1 degree F [0.5 C]
According to ASTM C1064, what is one reason to take the temperature of concrete?
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?
False
The sample of concrete used for temperature determination must be rodded 25 times.
True or False?
False
Sampling by this method is required when tests are to be made to determine _____
with specification requirements.
Compliance
This method covers sampling from four types of mixtures which are _____, _____,
_____, and _____.
Stationary mixers, paving mixers, revolving drum mixers, and open top mixers
