ACI AGGREGATE BASE TESTING
TECHNICIAN ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
●● The _____ or _____ should obtain samples related to the control of
production at the source or related to the control of the work at the site..
Answer: Manufacturers, contractors
●● Samples to be tested for quality should, when possible, be obtained
from the _____..
Answer: Finished product
●● (D75) Sampling containers for aggregate samples should be made so
that the contents will not be lost, ____ or ___..
Answer: Contaminated or damaged
●● The reason it is difficult to obtain unbiased samples from stockpiles
is because coarse and fine particles become segregated. True or False?.
Answer: True
●● ____ can help in obtaining accurate samples from stockpiles..
Answer: Power equipment
,●● (D75)What are the four sources from which field samples can be
obtained?.
Answer: Conveyer belts
Transport units
Roadways
Stockpiles
●● Not using correct procedures for reducing samples to testing size can
result in a _____..
Answer: Nonrepresentative sample
●● T or F
Generally, small samples are most representative of the total supply..
Answer: False
●● T or F
There are some instances in which differences between test samples
can't be avoided..
Answer: True
●● What determines whether large-size particles are equally distributed
among test samples that have been reduced?.
Answer: Laws of chance
, ●● Which method of reducing a sample must be used with fine, dry
aggregate? (C702).
Answer: Method A, mechanical splitter
●● What must be done to the sample if method B or C is used? (C702).
Answer: Moisten the sample
●● What do you do if the sample is wet and Method A is to be used?
(C702).
Answer: Dry the sample
●● Method C, miniature stockpiling, cannot be used for which type of
aggregate? (C702).
Answer: Coarse aggregate, or mixtures of coarse and fine aggregate
●● Which method involves the use of chutes, holding receptacles, and
hoppers or straight-edged pans? (C702).
Answer: Method A
●● Sample splitters must have how many equal width chutes for coarse
aggregate? (C702).
Answer: 8
TECHNICIAN ACTUAL EXAM PAPER 2026
QUESTIONS WITH ANSWERS GRADED A+
●● The _____ or _____ should obtain samples related to the control of
production at the source or related to the control of the work at the site..
Answer: Manufacturers, contractors
●● Samples to be tested for quality should, when possible, be obtained
from the _____..
Answer: Finished product
●● (D75) Sampling containers for aggregate samples should be made so
that the contents will not be lost, ____ or ___..
Answer: Contaminated or damaged
●● The reason it is difficult to obtain unbiased samples from stockpiles
is because coarse and fine particles become segregated. True or False?.
Answer: True
●● ____ can help in obtaining accurate samples from stockpiles..
Answer: Power equipment
,●● (D75)What are the four sources from which field samples can be
obtained?.
Answer: Conveyer belts
Transport units
Roadways
Stockpiles
●● Not using correct procedures for reducing samples to testing size can
result in a _____..
Answer: Nonrepresentative sample
●● T or F
Generally, small samples are most representative of the total supply..
Answer: False
●● T or F
There are some instances in which differences between test samples
can't be avoided..
Answer: True
●● What determines whether large-size particles are equally distributed
among test samples that have been reduced?.
Answer: Laws of chance
, ●● Which method of reducing a sample must be used with fine, dry
aggregate? (C702).
Answer: Method A, mechanical splitter
●● What must be done to the sample if method B or C is used? (C702).
Answer: Moisten the sample
●● What do you do if the sample is wet and Method A is to be used?
(C702).
Answer: Dry the sample
●● Method C, miniature stockpiling, cannot be used for which type of
aggregate? (C702).
Answer: Coarse aggregate, or mixtures of coarse and fine aggregate
●● Which method involves the use of chutes, holding receptacles, and
hoppers or straight-edged pans? (C702).
Answer: Method A
●● Sample splitters must have how many equal width chutes for coarse
aggregate? (C702).
Answer: 8
