CONCRETE FIELD TECHNICIAN NCDOT STUDY EXAM|QUESTIONS AND VERIFIED
ANSWERS|NEW UPDATE 2026/2027|GRADED A+
While performing the Volumetric Method air test, two pints of alcohol were used to dispel the foam.
Which of the following statements is true?
CORRECT|ANSWER
No correction is required
When pouring Drill Pier Concrete, what is the minimum sampling frequency for test specimens?
CORRECT|ANSWER
Each load
When used to determine unit weight, the concrete in the mold must be struck off with a ...
CORRECT|ANSWER
Strike off plate
The reading on the gauge of a pressure meter is 6.2%. The aggregate used has a correction factor of
0.3%. The final air reported is ...
CORRECT|ANSWER
5.9%
Which percent range most nearly represents the amount of paste volume in a concrete mix?
CORRECT|ANSWER
20-40%
, The air content for incidental and structural concrete ranges from ________ to ________ percent
CORRECT|ANSWER
4.5-7.5
Components of concrete that are heated due to cold conditions are heated to a maximum temperature
of _________ degrees Fahrenheit by NCDOT specifications.
CORRECT|ANSWER
150
When water is added to concrete in the mixer at the job site, the minimum number of revolutions
placed on the mixer is...
CORRECT|ANSWER
25
After consolidation of the unit weight sample, a small amount of concrete can be added to correct for
any deficiencies.
CORRECT|ANSWER
true
Calculate the air content using the following weights: Theoretical Unit Weight 150.05 pcf Actual Unit
Weight 140.75 pcf
CORRECT|ANSWER
6.2%
The minimum size sample for one set of concrete test specimens is:
ANSWERS|NEW UPDATE 2026/2027|GRADED A+
While performing the Volumetric Method air test, two pints of alcohol were used to dispel the foam.
Which of the following statements is true?
CORRECT|ANSWER
No correction is required
When pouring Drill Pier Concrete, what is the minimum sampling frequency for test specimens?
CORRECT|ANSWER
Each load
When used to determine unit weight, the concrete in the mold must be struck off with a ...
CORRECT|ANSWER
Strike off plate
The reading on the gauge of a pressure meter is 6.2%. The aggregate used has a correction factor of
0.3%. The final air reported is ...
CORRECT|ANSWER
5.9%
Which percent range most nearly represents the amount of paste volume in a concrete mix?
CORRECT|ANSWER
20-40%
, The air content for incidental and structural concrete ranges from ________ to ________ percent
CORRECT|ANSWER
4.5-7.5
Components of concrete that are heated due to cold conditions are heated to a maximum temperature
of _________ degrees Fahrenheit by NCDOT specifications.
CORRECT|ANSWER
150
When water is added to concrete in the mixer at the job site, the minimum number of revolutions
placed on the mixer is...
CORRECT|ANSWER
25
After consolidation of the unit weight sample, a small amount of concrete can be added to correct for
any deficiencies.
CORRECT|ANSWER
true
Calculate the air content using the following weights: Theoretical Unit Weight 150.05 pcf Actual Unit
Weight 140.75 pcf
CORRECT|ANSWER
6.2%
The minimum size sample for one set of concrete test specimens is:
