ACI Concrete Field Testing Technician-
Grade I {latest 2026 -2027 update}
questions and answers 100% correct
The minimum size sample for making strength test specimens is _____. - correct
answer 28 L (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 - 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
this 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. True or False? - correct answer
False
The composite samples from a truck mixer must be obtained from the _____ portion of
the batch. - correct 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. - correct
answer Wet sieved
,The slump test is applicable to plastic concrete with a maximum size aggregate of
_____. - correct answer 1.5 in. [37.5 mm]
When the 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. [37.5 mm] sieve
The mold for making the slump test is in the shape of _____. - correct answer The
frustum of a cone
The height of the slump mold is _____. - correct answer 12 in. [300 mm]
The interior surface of the slump mold is allowed to have minor irregularities. True or
False? - correct answer False
, For use in the slump test, the end or both ends of the tamping rod must be _____. -
correct answer Rounded to a hemispherical tip
The sample of concrete for use in making the slump test must be obained 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 beginning the test. True or False? -
correct answer False
The surface on which the slump mold will be placed must be _____. - correct answer
Flat, level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - correct answer 3
Grade I {latest 2026 -2027 update}
questions and answers 100% correct
The minimum size sample for making strength test specimens is _____. - correct
answer 28 L (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 - 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
this 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. True or False? - correct answer
False
The composite samples from a truck mixer must be obtained from the _____ portion of
the batch. - correct 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. - correct
answer Wet sieved
,The slump test is applicable to plastic concrete with a maximum size aggregate of
_____. - correct answer 1.5 in. [37.5 mm]
When the 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. [37.5 mm] sieve
The mold for making the slump test is in the shape of _____. - correct answer The
frustum of a cone
The height of the slump mold is _____. - correct answer 12 in. [300 mm]
The interior surface of the slump mold is allowed to have minor irregularities. True or
False? - correct answer False
, For use in the slump test, the end or both ends of the tamping rod must be _____. -
correct answer Rounded to a hemispherical tip
The sample of concrete for use in making the slump test must be obained 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 beginning the test. True or False? -
correct answer False
The surface on which the slump mold will be placed must be _____. - correct answer
Flat, level, moist, nonabsorbent, and free of vibration
The slump mold is filled in _____ layers. - correct answer 3
