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ACI WRITTEN EXAM NEWEST ACTUAL EXAM QUESTIONS AND DETAILED CORRECT ANSWERS 2025 | A+ GRADE
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ACI WRITTEN EXAM NEWEST ACTUAL EXAM QUESTIONS AND DETAILED CORRECT ANSWERS 2025 | A+ GRADE
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ACI WRITTEN EXAM NEWEST ACTUALEXAM QUESTIONS AND DETAILED
CORRECT ANSWERS 2025 | A+ GRADE
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 Correct
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 Correct
Answer 5
When sampling from a revolving drum truck mixer,
concrete must be sampled at a minimum of ______
regularly spaced intervals during discharge of the middle
portion of the batch Correct Answer 2
Concrete samples from a truck mixer must be obtained
before any water or admixtures are added to the mixer at
the job site Correct Answer False
The composite sample from a truck mixer must be
obtained from the _____ portion of the batch Correct
Answer Middle
When the concrete contains aggregate larger than
permitted for a particular test method, the sample for
,concrete must be ______ ______ before making the test
Correct Answer Wet Sieved
The slump test is applicable to plastic concrete with a max
aggregate size of ____ in Correct Answer 1.5 in (37.5 mm)
When concrete contains aggregate larger than allowed for
the slump test the large aggregate must be Correct
Answer removed by wet sieving the sample over 1.5 in
sieve
The mold for making the slump test is the shape of Correct
Answer the frustum of a cone
The height fo the slump mold is _____ in Correct Answer
12
The interior surface of the slump mold is allowed to have
minor irregularities Correct Answer false
For use in the slump test, the end or both ends of the
tamping rod must be Correct Answer rounded
the sample of concrete for use in making the slump test
must be obtained in accordance with ASTM standard
________ Correct Answer C172 (Standard Practice for
sampling freshly mixed concrete
The slump mold should be in a dry condition before the
beginning of the test Correct Answer false
, the surface on which the slump mold will be placed must
be _____ Correct Answer flat, level moist, nonabsorbent,
free of vibration
The slump mold is filled in ____ layers Correct Answer 3
Each layer should fill approx ____ volume of the mold
Correct Answer One third
The approx conrete depth after placing the first layer is
____, and ____ after the second Correct Answer 2 and
5/8 in (70mm), 6.125 in (160 mm)
what is the specified number of rodding for each layer
Correct Answer 25
How deep should the tamping rodd penetrate each layer
Correct Answer 1st layer all the way then one inch into
previous layer
What must be done if the concrete drops below the top of
the slump mold while the top layer is being rodded Correct
Answer add additional concrete
Prior to lifting the mold, concrete must be removed from
______ Correct Answer the area surrounding base of the
mold
After final rodding the sides of the mold should be tapped
lightly Correct Answer False
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