ACI CERTIFICATION EXAM SCRIPT 2026
FULL QUESTIONS AND CORRECT
ANSWERS
◉True. Answer: T/F Portions of a composite sample shall be
thoroughly remixed before beginning tests on the sample.
◉5 min. Answer: Start tests for slump, temp., and air content within
______ min after fabricating the composite sample.
◉Sources of evaporation. Answer: The concrete sample must be
protected from contamination and ________.
◉28 L (1 cf). Answer: The minimum size sample for making
strength test specimens is _______.
◉2. Answer: 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.
, ◉5. Answer: When sampling from a paving mixer, obtain samples
from at least _________ different portions of the pile and combine
them into one composite sample for test purposes.
◉2. Answer: When sampling from a revolving drum truck mixer,
sample concrete by collecting _____ or more portions taken at
regularly spaced intervals during discharge of the middle portion of
the batch.
◉False. Answer: T/F Concrete samples from a truck mixer must be
obtained before any water or admixtures are added to the mixer at
the job site.
◉Middle. Answer: The composite sample from a truck mixer must
be obtained from the ________ portion of the batch.
◉Wet seived. Answer: When the concrete contains aggregate larger
than permitted for a particular test method, the sample of concrete
must be ______ before making the test.
◉1.5 in (37.5 mm). Answer: The slump test is applicable to plastic
concrete with a maximum size agg. of _________.
◉removed. Answer: When the concrete contains aggregate larger
than allowed for the slump test, the large agg. must be _______.
FULL QUESTIONS AND CORRECT
ANSWERS
◉True. Answer: T/F Portions of a composite sample shall be
thoroughly remixed before beginning tests on the sample.
◉5 min. Answer: Start tests for slump, temp., and air content within
______ min after fabricating the composite sample.
◉Sources of evaporation. Answer: The concrete sample must be
protected from contamination and ________.
◉28 L (1 cf). Answer: The minimum size sample for making
strength test specimens is _______.
◉2. Answer: 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.
, ◉5. Answer: When sampling from a paving mixer, obtain samples
from at least _________ different portions of the pile and combine
them into one composite sample for test purposes.
◉2. Answer: When sampling from a revolving drum truck mixer,
sample concrete by collecting _____ or more portions taken at
regularly spaced intervals during discharge of the middle portion of
the batch.
◉False. Answer: T/F Concrete samples from a truck mixer must be
obtained before any water or admixtures are added to the mixer at
the job site.
◉Middle. Answer: The composite sample from a truck mixer must
be obtained from the ________ portion of the batch.
◉Wet seived. Answer: When the concrete contains aggregate larger
than permitted for a particular test method, the sample of concrete
must be ______ before making the test.
◉1.5 in (37.5 mm). Answer: The slump test is applicable to plastic
concrete with a maximum size agg. of _________.
◉removed. Answer: When the concrete contains aggregate larger
than allowed for the slump test, the large agg. must be _______.
