ACI CONCRETE FIELD TESTING TECHNICIAN
GRADE 1 COMPREHENSIVE EXAM SCRIPT 2026
FULL SOLUTION TESTED QUESTIONS
● Sampling Fresh Concrete- This practice covers sampling from four
types of equipment, which are _____, _____, _____, and _____.
Answer: Stationary mixers, paving mixers, revolving truck mixers,
continuous mixers. (Ref. 1.5)
● Sampling Fresh Concrete- The elapsed time between obtaining the
first and final portions of a composite shall not exceed _____. Answer:
15 Minutes (Ref. 1.5)
● Sampling Fresh Concrete- Portions of a composite sample shall be
thoroughly remixed before beginning tests on the sample. True or False
Answer: True (Ref. 1.5.5)
● Sampling Fresh Concrete- Start tests for slump, temperature, and air
content within _____ _____ after obtaining the final portion of the
composite sample. Answer: 5 minutes (Ref. 1.5.5 & Fig. 1.6)
,● Sampling Fresh Concrete- Start molding the specimens for strength
tests within _____ _____ after fabricating the composite sample.
Answer: 15 minutes (Ref. 1.5.5 & Fig. 1.6)
● Sampling Fresh Concrete- The concrete sample must be protected
from contamination and _____, _____ and _____. Answer: Sun, wind,
evaporation (Ref. 1.2)
● Sampling Fresh Concrete- The minimum size sample for making
strength test specimens is ______. Answer: 1 cubic foot (28L) (Ref.
1.5.1)
● Sampling Fresh Concrete- 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 (Ref.
1.5.2)
● Sampling Fresh Concrete- When sampling from a paving mixer,
obtain samples from at least _____ different portions of the pile and
combine them into one composite samples for test purposes. Answer: 5
(Ref. 1.5.3)
● Sampling Fresh Concrete- When sampling from a revolving truck
mixer, sample the concrete by collecting _____ or more portions take at
regularly spaced intervals during discharge of the middle portion of the
batch. Answer: 2 (Ref. 1.5.2)
, ● Sampling Fresh Concrete- 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 (Ref. 1.5.2)
● Sampling Fresh Concrete- 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/screened (Ref. 1.5.1)
● Sampling Fresh Concrete- (Verbal) What must occur before a sample
of concrete can be taken from a revolving drum mixer? Answer: All
water and admixtures must be added to the mixer
● Sampling Fresh Concrete- (Verbal) When sampling from a stationary
or revolving drum mixer, what is collected and when is it taken during
discharge? Answer: In two or more portions of concrete, at regularly
spaced intervals, from the middle of the batch.
● Sampling Fresh Concrete- (Verbal) How are sample portions obtained
from the discharge stream of a stationary or revolving drum mixer?
Answer: Repeatedly pass a receptacle through the entire discharge
stream, completely divert the discharge stream into a sample container.
● Sampling Fresh Concrete- (Verbal) Describe the procedure for
collecting a sample from a paving mixer. Answer: Discharge the
GRADE 1 COMPREHENSIVE EXAM SCRIPT 2026
FULL SOLUTION TESTED QUESTIONS
● Sampling Fresh Concrete- This practice covers sampling from four
types of equipment, which are _____, _____, _____, and _____.
Answer: Stationary mixers, paving mixers, revolving truck mixers,
continuous mixers. (Ref. 1.5)
● Sampling Fresh Concrete- The elapsed time between obtaining the
first and final portions of a composite shall not exceed _____. Answer:
15 Minutes (Ref. 1.5)
● Sampling Fresh Concrete- Portions of a composite sample shall be
thoroughly remixed before beginning tests on the sample. True or False
Answer: True (Ref. 1.5.5)
● Sampling Fresh Concrete- Start tests for slump, temperature, and air
content within _____ _____ after obtaining the final portion of the
composite sample. Answer: 5 minutes (Ref. 1.5.5 & Fig. 1.6)
,● Sampling Fresh Concrete- Start molding the specimens for strength
tests within _____ _____ after fabricating the composite sample.
Answer: 15 minutes (Ref. 1.5.5 & Fig. 1.6)
● Sampling Fresh Concrete- The concrete sample must be protected
from contamination and _____, _____ and _____. Answer: Sun, wind,
evaporation (Ref. 1.2)
● Sampling Fresh Concrete- The minimum size sample for making
strength test specimens is ______. Answer: 1 cubic foot (28L) (Ref.
1.5.1)
● Sampling Fresh Concrete- 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 (Ref.
1.5.2)
● Sampling Fresh Concrete- When sampling from a paving mixer,
obtain samples from at least _____ different portions of the pile and
combine them into one composite samples for test purposes. Answer: 5
(Ref. 1.5.3)
● Sampling Fresh Concrete- When sampling from a revolving truck
mixer, sample the concrete by collecting _____ or more portions take at
regularly spaced intervals during discharge of the middle portion of the
batch. Answer: 2 (Ref. 1.5.2)
, ● Sampling Fresh Concrete- 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 (Ref. 1.5.2)
● Sampling Fresh Concrete- 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/screened (Ref. 1.5.1)
● Sampling Fresh Concrete- (Verbal) What must occur before a sample
of concrete can be taken from a revolving drum mixer? Answer: All
water and admixtures must be added to the mixer
● Sampling Fresh Concrete- (Verbal) When sampling from a stationary
or revolving drum mixer, what is collected and when is it taken during
discharge? Answer: In two or more portions of concrete, at regularly
spaced intervals, from the middle of the batch.
● Sampling Fresh Concrete- (Verbal) How are sample portions obtained
from the discharge stream of a stationary or revolving drum mixer?
Answer: Repeatedly pass a receptacle through the entire discharge
stream, completely divert the discharge stream into a sample container.
● Sampling Fresh Concrete- (Verbal) Describe the procedure for
collecting a sample from a paving mixer. Answer: Discharge the
