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ACI (AMERICAN CONCRETE INSTITUTE) WRITTEN EXAM
2024 STUDY GUIDE ACTUAL EXAM 180 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A
Concrete containing aggregate with a nominal
maximum aggregate size greater than 3 inches
may require up to __________ minutes before
the temperature stabilizes after mixing -
....ANSWER >>>>20
The temperature measuring device shall be
capable of measuring the temperature of fresh
concrete to ± ________ °F and throughout the
range of __________ °F to __________ °F. -
....ANSWER >>>>1, 30, 120
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The temperature measuring device shall be
calibrated ________________, or whenever
there is a question of
_____________________. - ....ANSWER
>>>>annually, accuracy
Reference thermometers must be accurate and
readable to ± __________ ° F. - ....ANSWER
>>>>0.5
The accuracy of TMD's must be verified at
________ temperatures at least ____________
apart - ....ANSWER >>>>2, 30 degrees F
The temperature of fresh concrete may be
measured in the transporting equipment or
forms providing there is at least 3" of cover.
True or False - ....ANSWER >>>>true
If transport equipment or forms are not used as
the container, prior to sampling, you must
__________________ the sample container
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used for obtaining the temperature of fresh
concrete - ....ANSWER >>>>dampen
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
The thermometer sensor should be immersed a
minimum of __________ inches into the
concrete and have at least ___________ inches
of concrete cover in all directions. - ....ANSWER
>>>>3, 3
After inserting the thermometer, the concrete
must be pressed around the temperature
measuring device to prevent the
__________________ ___________
temperature from affecting the reading -
....ANSWER >>>>ambient air
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Leave the temperature measuring device in the
concrete for at least _________ minutes, but
not more than _________ minutes before
reading - ....ANSWER >>>>2, 5
The temperature measuring device may be
removed from the concrete for reading. True or
False - ....ANSWER >>>>false
After reading, record the temperature to the
nearest _________ °F. - ....ANSWER >>>>1
The maximum allowable time between
obtaining the first and final portions of a
composite sample is _________minutes -
....ANSWER >>>>15
After all concrete samples have been
transported to the place where tests are to be
performed; the samples must be
_____________________ and
_____________________with a
ACI (AMERICAN CONCRETE INSTITUTE) WRITTEN EXAM
2024 STUDY GUIDE ACTUAL EXAM 180 QUESTIONS WITH
DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) ALREADY GRADED A
Concrete containing aggregate with a nominal
maximum aggregate size greater than 3 inches
may require up to __________ minutes before
the temperature stabilizes after mixing -
....ANSWER >>>>20
The temperature measuring device shall be
capable of measuring the temperature of fresh
concrete to ± ________ °F and throughout the
range of __________ °F to __________ °F. -
....ANSWER >>>>1, 30, 120
, Page |2
The temperature measuring device shall be
calibrated ________________, or whenever
there is a question of
_____________________. - ....ANSWER
>>>>annually, accuracy
Reference thermometers must be accurate and
readable to ± __________ ° F. - ....ANSWER
>>>>0.5
The accuracy of TMD's must be verified at
________ temperatures at least ____________
apart - ....ANSWER >>>>2, 30 degrees F
The temperature of fresh concrete may be
measured in the transporting equipment or
forms providing there is at least 3" of cover.
True or False - ....ANSWER >>>>true
If transport equipment or forms are not used as
the container, prior to sampling, you must
__________________ the sample container
, Page |3
used for obtaining the temperature of fresh
concrete - ....ANSWER >>>>dampen
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
The thermometer sensor should be immersed a
minimum of __________ inches into the
concrete and have at least ___________ inches
of concrete cover in all directions. - ....ANSWER
>>>>3, 3
After inserting the thermometer, the concrete
must be pressed around the temperature
measuring device to prevent the
__________________ ___________
temperature from affecting the reading -
....ANSWER >>>>ambient air
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Leave the temperature measuring device in the
concrete for at least _________ minutes, but
not more than _________ minutes before
reading - ....ANSWER >>>>2, 5
The temperature measuring device may be
removed from the concrete for reading. True or
False - ....ANSWER >>>>false
After reading, record the temperature to the
nearest _________ °F. - ....ANSWER >>>>1
The maximum allowable time between
obtaining the first and final portions of a
composite sample is _________minutes -
....ANSWER >>>>15
After all concrete samples have been
transported to the place where tests are to be
performed; the samples must be
_____________________ and
_____________________with a
