ACI - AGGREGATE BASE TESTING
TECHNICIAN EXAM 2025 QUESTIONS
AND ANSWERS
Sampling should be done very carefully because it is as important as ____________. -
ANS Testing
What are the four sources from which field samples can be obtained? - ANS Conveyer belts
Transport units
Roadways
Stockpiles
Sampling containers for aggregate samples should be made so that the contents will not be
lost, _____ or _____. - ANS contaminated, damaged
Not using correct procedures for reducing samples to testing size can result in a _____. -
ANS Nonrepresentative sample
T or F
Generally, small samples are most representative of the total supply. - ANS False
T or F
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, There are some instances in which differences between test samples can't be avoided. -
ANS True
What determines whether large-size particles are equally distributed among test samples that
have been reduced? - ANS Laws of chance
Which method of reducing a sample must be used with fine, dry aggregate? - ANS Method A,
mechanical splitter
What must be done to the sample if method B or C is used? - ANS Moisten the sample
What do you do if the sample is wet and Method A is to be used? - ANS Dry the sample
Method C, miniature stockpiling, cannot be used for which type of aggregate? - ANS Coarse
aggregate, or mixtures of coarse and fine aggregate
Which method involves the use of chutes, holding receptacles, and hoppers or straight-edged
pans? - ANS Method A
Sample splitters must have how many equal width chutes for coarse aggregate? - ANS 8
Sample splitters must have how many equal width chutes for fine aggregate? - ANS 12
In Methods B and C the sample is shoveled into a ____ before it is flattened and divided. -
ANS conical pile
When using Method B, what is an alternate surface that can be used when reducing the
sample? - ANS Canvas blanket or tear resistant tarp
2
Page
@COPYRIGHT @THEBRIGHT 2025/2026
TECHNICIAN EXAM 2025 QUESTIONS
AND ANSWERS
Sampling should be done very carefully because it is as important as ____________. -
ANS Testing
What are the four sources from which field samples can be obtained? - ANS Conveyer belts
Transport units
Roadways
Stockpiles
Sampling containers for aggregate samples should be made so that the contents will not be
lost, _____ or _____. - ANS contaminated, damaged
Not using correct procedures for reducing samples to testing size can result in a _____. -
ANS Nonrepresentative sample
T or F
Generally, small samples are most representative of the total supply. - ANS False
T or F
1
Page
@COPYRIGHT @THEBRIGHT 2025/2026
, There are some instances in which differences between test samples can't be avoided. -
ANS True
What determines whether large-size particles are equally distributed among test samples that
have been reduced? - ANS Laws of chance
Which method of reducing a sample must be used with fine, dry aggregate? - ANS Method A,
mechanical splitter
What must be done to the sample if method B or C is used? - ANS Moisten the sample
What do you do if the sample is wet and Method A is to be used? - ANS Dry the sample
Method C, miniature stockpiling, cannot be used for which type of aggregate? - ANS Coarse
aggregate, or mixtures of coarse and fine aggregate
Which method involves the use of chutes, holding receptacles, and hoppers or straight-edged
pans? - ANS Method A
Sample splitters must have how many equal width chutes for coarse aggregate? - ANS 8
Sample splitters must have how many equal width chutes for fine aggregate? - ANS 12
In Methods B and C the sample is shoveled into a ____ before it is flattened and divided. -
ANS conical pile
When using Method B, what is an alternate surface that can be used when reducing the
sample? - ANS Canvas blanket or tear resistant tarp
2
Page
@COPYRIGHT @THEBRIGHT 2025/2026
