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ACI Certification: Sample Written Exam Questions from Booklet Exam/21 Q’s and A’s
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ACI Certification: Sample Written Exam Questions from Booklet Exam/21 Q’s and A’s
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ACI Certification: Sample Written ExamQuestions from Booklet Exam/21 Q’s and
A’s
False - -The method of determining air content containing lightweight
aggregate is the pressure method. True or False?
-True - -When making a test cylinder from concrete being used in
construction, the field technician must also measure the slump of the
concrete. True or False?
-Disregard the test and retest on another portion of the sample. - -While the
technician is checking the slump of the concrete, there is a decided falling
away or shearing off of the concrete from one side of the sample. What
should the technician do?
-determination that at least 8 hours has elapsed since final set. - -
Preparation of specimens for transport includes:
-4.8% - -If the aggregate correction factor for a given source of fine and
coarse aggregate is found to be 0.2% in a pressure air meter, and an air
content value of 5.0% is read on the gauge of the same air meter containing
concrete with the same aggregate, what is the correct air content?
-Protected from jarring, moisture loss, and freezing. - -Strength test
specimens transported from the field to the testing laboratory must be:
-5 minutes - -Tests for slump and air content must be started within [ ] after
obtaining the final portion of the composite sample.
-1 cubic foot - -The minimum size for samples to be used strength test is:
-False - -After the strike-off of the measure used to determine density, a
small quantity of concrete may be added to correct a deficiency. True of
False?
-60 to 80 degrees Fahrenheit - -For normal strength concretes, what
temperature range must be maintained for test cylinders during initial
curing?
-False - -When the concrete contains large aggregate, the testing technician
should wet-sieve the sample before making density (unit weight) tests for
use in yield computations. True or False?
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