ACI CONCRETE TEST 4 2026 EXAM REVIEW
SOLVED QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False?
Answer: False
◉ This method covers sampling from four types of mixtures which
are _____, _____, _____, and _____.
Answer: Stationary mixers, paving mixers, revolving drum mixers,
and open top mixers
◉ The maximum allowable time between obtaining the first and
final portions of a composite sample is _____ minutes.
Answer: 15
◉ The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes.
Answer: 5
,◉ The molding of strength test specimens shall begin within _____
minutes after fabricating the composite sample.
Answer: 15
◉ The concrete sample must be protected from sources of _____ and
_____.
Answer: contamination and rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____.
Answer: 1ft^3
◉ 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
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.
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 this batch.
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. True or
False?
Answer: False
◉ The composite samples from a truck mixer must be obtained from
the _____ portion of the batch.
Answer: Middle
◉ When the concrete contains aggregate larger than that permitted
for a particular test method, the sample of concrete must be _____
_____ before making the test.
Answer: Wet sieved
◉ The slump test is applicable to plastic concrete with a maximum
size aggregate of _____.
Answer: 1.5 in.
SOLVED QUESTIONS AND CORRECT
ANSWERS GRADED A+
◉ A maximum temperature of freshly mixed concrete is specified in
ASTM C1064. True or False?
Answer: False
◉ This method covers sampling from four types of mixtures which
are _____, _____, _____, and _____.
Answer: Stationary mixers, paving mixers, revolving drum mixers,
and open top mixers
◉ The maximum allowable time between obtaining the first and
final portions of a composite sample is _____ minutes.
Answer: 15
◉ The maximum elapsed time allowed between obtaining the final
portion of the composite sample and beginning the tests for slump,
temperature, and air content is _____ minutes.
Answer: 5
,◉ The molding of strength test specimens shall begin within _____
minutes after fabricating the composite sample.
Answer: 15
◉ The concrete sample must be protected from sources of _____ and
_____.
Answer: contamination and rapid evaporation
◉ The minimum size sample for making strength test specimens is
_____.
Answer: 1ft^3
◉ 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
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.
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 this batch.
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. True or
False?
Answer: False
◉ The composite samples from a truck mixer must be obtained from
the _____ portion of the batch.
Answer: Middle
◉ When the concrete contains aggregate larger than that permitted
for a particular test method, the sample of concrete must be _____
_____ before making the test.
Answer: Wet sieved
◉ The slump test is applicable to plastic concrete with a maximum
size aggregate of _____.
Answer: 1.5 in.
