FIELD TECH 2026 EXAMINATION TEST QUESTIONS AND
ANSWERS GUARANTEE A+
✔✔The maximum allowable time between obtaining the first and final portions of a
composite sample is _____ minutes. - ✔✔15
✔✔Portions of a composite sample shall be thoroughly remixed bfore beginning tests
on the sample. True of False? - ✔✔True
✔✔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. - ✔✔5
✔✔The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite sample. - ✔✔15
✔✔The concrete sample must be protected from contamination and _____. - ✔✔Rapid
evaporation
✔✔The minimum size sample for making strength test specimens is _____. - ✔✔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 -
✔✔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. - ✔✔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. - ✔✔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? - ✔✔False
✔✔The composite samples from a truck mixer must be obtained from the _____ portion
of the batch. - ✔✔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. - ✔✔Wet
sieved
, ✔✔The slump test is applicable to plastic concrete with a maximum size aggregate of
_____. - ✔✔1.5 in. [37.5 mm]
✔✔When the concrete contains aggregate larger than allowed for the slump test, the
large aggregate must be _____. - ✔✔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 _____. - ✔✔The frustum of a
cone
✔✔The height of the slump mold is _____. - ✔✔12 in. [300 mm]
✔✔The interior surface of the slump mold is allowed to have minor irregularities. True or
False? - ✔✔False
✔✔For use in the slump test, the end or both ends of the tamping rod must be _____. -
✔✔Rounded to a hemispherical tip
✔✔The sample of concrete for use in making the slump test must be obained in
accordance with ASTM Standard _____. - ✔✔C172, Standard Practice for Sampling
Freshly Mixed Concrete
✔✔The slump mold should be in a dry condition before beginning the test. True or
False? - ✔✔False
✔✔The surface on which the slump mold will be placed must be _____. - ✔✔Flat, level,
moist, nonabsorbent, and free of vibration
✔✔The slump mold is filled in _____ layers. - ✔✔3
✔✔Each layer should fill approximately _____ the volume of the mold. - ✔✔One-third
✔✔The approximate concrete depth (in verticle distance) after placing the first layer is
_____, and the second layer is _____. - ✔✔2 5/8 in. [70 mm], 6 1/8 in. [160 mm]
✔✔What is the specified number of roddings for each layer? - ✔✔25
✔✔How deep should the tamping rod penetrate into each layer? - ✔✔Rod each layer
throughout its depth; on the second and final layers, the rod should penetrate into the
previous layer approximately 1 in. [25 mm]
✔✔When rodding the bottom layer, the tamping rod must be _____ to uniformly
distribute the strokes. - ✔✔Slightly inclined
ANSWERS GUARANTEE A+
✔✔The maximum allowable time between obtaining the first and final portions of a
composite sample is _____ minutes. - ✔✔15
✔✔Portions of a composite sample shall be thoroughly remixed bfore beginning tests
on the sample. True of False? - ✔✔True
✔✔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. - ✔✔5
✔✔The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite sample. - ✔✔15
✔✔The concrete sample must be protected from contamination and _____. - ✔✔Rapid
evaporation
✔✔The minimum size sample for making strength test specimens is _____. - ✔✔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 -
✔✔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. - ✔✔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. - ✔✔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? - ✔✔False
✔✔The composite samples from a truck mixer must be obtained from the _____ portion
of the batch. - ✔✔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. - ✔✔Wet
sieved
, ✔✔The slump test is applicable to plastic concrete with a maximum size aggregate of
_____. - ✔✔1.5 in. [37.5 mm]
✔✔When the concrete contains aggregate larger than allowed for the slump test, the
large aggregate must be _____. - ✔✔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 _____. - ✔✔The frustum of a
cone
✔✔The height of the slump mold is _____. - ✔✔12 in. [300 mm]
✔✔The interior surface of the slump mold is allowed to have minor irregularities. True or
False? - ✔✔False
✔✔For use in the slump test, the end or both ends of the tamping rod must be _____. -
✔✔Rounded to a hemispherical tip
✔✔The sample of concrete for use in making the slump test must be obained in
accordance with ASTM Standard _____. - ✔✔C172, Standard Practice for Sampling
Freshly Mixed Concrete
✔✔The slump mold should be in a dry condition before beginning the test. True or
False? - ✔✔False
✔✔The surface on which the slump mold will be placed must be _____. - ✔✔Flat, level,
moist, nonabsorbent, and free of vibration
✔✔The slump mold is filled in _____ layers. - ✔✔3
✔✔Each layer should fill approximately _____ the volume of the mold. - ✔✔One-third
✔✔The approximate concrete depth (in verticle distance) after placing the first layer is
_____, and the second layer is _____. - ✔✔2 5/8 in. [70 mm], 6 1/8 in. [160 mm]
✔✔What is the specified number of roddings for each layer? - ✔✔25
✔✔How deep should the tamping rod penetrate into each layer? - ✔✔Rod each layer
throughout its depth; on the second and final layers, the rod should penetrate into the
previous layer approximately 1 in. [25 mm]
✔✔When rodding the bottom layer, the tamping rod must be _____ to uniformly
distribute the strokes. - ✔✔Slightly inclined
