ACI Written Exam 2026 Questions and
Answers
The sensor of the temperature measureing device shall be submerged a minimum
of ____ in - Answer -3 (75mm)
The temperature measureing device shall have a capacity of measuring temperature
of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ -
Answer -1(.5 degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is a
question of _____ - Answer -annually, accuracy
The temp of concrete may be measured in a wheelbarrow - Answer -true
the temp of concrete may be measured in a wall form - Answer -true
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temp. - Answer -false
What must be done to the sample container prior to sampling the concrete -
Answer -dampen (with water)
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,what must be done to the concrete surrounding the temp measuring device after the
device has submerged - Answer -Press concrete around measuring device
How long must the temp device remain in the concrete - Answer -at least 2 minutes
(but no more than 5)
After temp of concrete is read, what then is required - Answer -reporting of temp
the temp of concrete to be measured to the nearest ____degree F - Answer -1 (.5
degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete -
Answer -verify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 - Answer -False
The sample of concrete used for temp determination must be rodded 25 times -
Answer -False
Sampling by this method is required when tests are to be made to determine ____
with specification requirements - Answer -compliance
The method covers sampling from four types of mixers which are _____, _____,
____, and _______ - Answer -stationary mixes, paving mixers, revolving drum
mixers and open top mixers
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, 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 before beginning tests
on the sample - Answer -True
The maximum elapsed time allowed between obtaining the final portion of the
composite sample and beginning the tests for slump, temp, and air content is
______ minutes - Answer -5
the molding of strength test specimens shall begin within ____ minutes after
fabricating the composite sample - Answer -15
The concrete sample must be protected from contamination and ____ - Answer -
rapid evaporation
The minimum size sample test specimen is - Answer -28 L (1ft^3)
when sampling from a stationary mixer the batch must be sampled at _____ or
more regularly spaced intervals during discharge of the middle portion of the batch
- Answer -2
The composite sample for a paving mixer must represent a minimum of _____
different portions of the batch of concrete taken from the pile after discharge -
Answer -5
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Answers
The sensor of the temperature measureing device shall be submerged a minimum
of ____ in - Answer -3 (75mm)
The temperature measureing device shall have a capacity of measuring temperature
of freshly mixed conrcrete to +-_____ degrees F throught a range of _____ -
Answer -1(.5 degrees C), 30-120 (0-50 degrees C)
The temperature measuring device shall be calibrated____, or whenever there is a
question of _____ - Answer -annually, accuracy
The temp of concrete may be measured in a wheelbarrow - Answer -true
the temp of concrete may be measured in a wall form - Answer -true
A composite sample of concrete is required even if the only purpose for obtaining
the sample is to determine temp. - Answer -false
What must be done to the sample container prior to sampling the concrete -
Answer -dampen (with water)
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,what must be done to the concrete surrounding the temp measuring device after the
device has submerged - Answer -Press concrete around measuring device
How long must the temp device remain in the concrete - Answer -at least 2 minutes
(but no more than 5)
After temp of concrete is read, what then is required - Answer -reporting of temp
the temp of concrete to be measured to the nearest ____degree F - Answer -1 (.5
degree C)
According to the ASTM C1064 what is one reason to take the temp of concrete -
Answer -verify conformance to a specified requirement for temp
A max temp of concrete is specified in ASTM C1064 - Answer -False
The sample of concrete used for temp determination must be rodded 25 times -
Answer -False
Sampling by this method is required when tests are to be made to determine ____
with specification requirements - Answer -compliance
The method covers sampling from four types of mixers which are _____, _____,
____, and _______ - Answer -stationary mixes, paving mixers, revolving drum
mixers and open top mixers
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, 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 before beginning tests
on the sample - Answer -True
The maximum elapsed time allowed between obtaining the final portion of the
composite sample and beginning the tests for slump, temp, and air content is
______ minutes - Answer -5
the molding of strength test specimens shall begin within ____ minutes after
fabricating the composite sample - Answer -15
The concrete sample must be protected from contamination and ____ - Answer -
rapid evaporation
The minimum size sample test specimen is - Answer -28 L (1ft^3)
when sampling from a stationary mixer the batch must be sampled at _____ or
more regularly spaced intervals during discharge of the middle portion of the batch
- Answer -2
The composite sample for a paving mixer must represent a minimum of _____
different portions of the batch of concrete taken from the pile after discharge -
Answer -5
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
