ACI CONCRETE FIELD TESTING TECHNICIAN EXAM QUESTIONS AND VERIFIED CORRECT SOLUTIONS 2024
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ACI CONCRETE FIELD TESTING TECHNICIAN EXAM QUESTIONS AND VERIFIED CORRECT SOLUTIONS 2024
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 m...
ACI CONCRETE FIELD TESTING TECHNICIAN EXAM QUESTIONS
AND VERIFIED CORRECT SOLUTIONS 2024
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
The maximum allowable time between obtaining the first and final portions of a
composite sample is _____ minutes.
15
Portions of a composite sample shall be thoroughly remixed bfore beginning
tests on the sample. True of False?
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.
5
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite sample.
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