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ACI Written Exam Questions And Answers Graded (A+)
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ACI Written Exam Questions And Answers Graded(A+)
Answer :False. Relatively dense - Quiz :The method of determining air content
of concrete containing lightweight aggregate is the pressure method
Answer :True - Quiz :Is the following statement true or false? When making a
test cylinder from concrete being used in construction, the field technician
must also measure the slump of the concrete.
Answer :Disregard the test and retest on another portion of the sample. - Quiz
:While the technician is checking the slump of the concrete, there is a decided
falling away or shearing off of concrete from one side of the sample. What
should the technician do?
Answer :Determination that at least 8 hours has elapsed since final set. -
Quiz :Preparation of specimens for transport includes:
Answer :4.8% - Quiz :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?
Answer :Protected from jarring, moisture loss, and freezing - Quiz :Strength
test specimens transported from the field to the testing laboratory must be:
Answer :5 MInutes - Quiz :Tests for slump and air content must be started
within ________ after obtaining the final portion of the composite sample.
Answer :1 cubic foot - Quiz :The minimum size for samples to be used for
strength test is:
Answer :False - Quiz :Is the following statement true or false? After strike off
of the measure used to determine density, a small quantity of concrete may be
added to correct a deficiency.
Answer :60 to 80 degrees f (16 to 27 degrees C) - Quiz :For normal strength
concretes, what temperature range must be maintained for test cylinders
during initial curing?
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