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