ACI - Aggregate Base Testing Technician
questions and answers 2024\2025 A+ Grade
Testing
- correct answer Sampling should be done very carefully because it is as important as ____________.
Conveyer belts
Transport units
Roadways
Stockpiles
- correct answer What are the four sources from which field samples can be obtained?
contaminated, damaged
- correct answer Sampling containers for aggregate samples should be made so that the contents will
not be lost, _____ or _____.
Nonrepresentative sample
- correct answer Not using correct procedures for reducing samples to testing size can result in a _____.
False
- correct answer T or F
Generally, small samples are most representative of the total supply.
True
- correct answer T or F
There are some instances in which differences between test samples can't be avoided.
, Laws of chance
- correct answer What determines whether large-size particles are equally distributed among test
samples that have been reduced?
Method A, mechanical splitter
- correct answer Which method of reducing a sample must be used with fine, dry aggregate?
Moisten the sample
- correct answer What must be done to the sample if method B or C is used?
Dry the sample
- correct answer 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
- correct answer Method C, miniature stockpiling, cannot be used for which type of aggregate?
Method A
- correct answer Which method involves the use of chutes, holding receptacles, and hoppers or straight-
edged pans?
8
- correct answer Sample splitters must have how many equal width chutes for coarse aggregate?
12
- correct answer Sample splitters must have how many equal width chutes for fine aggregate?
conical pile
- correct answer In Methods B and C the sample is shoveled into a ____ before it is flattened and
divided.
Canvas blanket or tear resistant tarp
- correct answer When using Method B, what is an alternate surface that can be used when reducing the
sample?
questions and answers 2024\2025 A+ Grade
Testing
- correct answer Sampling should be done very carefully because it is as important as ____________.
Conveyer belts
Transport units
Roadways
Stockpiles
- correct answer What are the four sources from which field samples can be obtained?
contaminated, damaged
- correct answer Sampling containers for aggregate samples should be made so that the contents will
not be lost, _____ or _____.
Nonrepresentative sample
- correct answer Not using correct procedures for reducing samples to testing size can result in a _____.
False
- correct answer T or F
Generally, small samples are most representative of the total supply.
True
- correct answer T or F
There are some instances in which differences between test samples can't be avoided.
, Laws of chance
- correct answer What determines whether large-size particles are equally distributed among test
samples that have been reduced?
Method A, mechanical splitter
- correct answer Which method of reducing a sample must be used with fine, dry aggregate?
Moisten the sample
- correct answer What must be done to the sample if method B or C is used?
Dry the sample
- correct answer 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
- correct answer Method C, miniature stockpiling, cannot be used for which type of aggregate?
Method A
- correct answer Which method involves the use of chutes, holding receptacles, and hoppers or straight-
edged pans?
8
- correct answer Sample splitters must have how many equal width chutes for coarse aggregate?
12
- correct answer Sample splitters must have how many equal width chutes for fine aggregate?
conical pile
- correct answer In Methods B and C the sample is shoveled into a ____ before it is flattened and
divided.
Canvas blanket or tear resistant tarp
- correct answer When using Method B, what is an alternate surface that can be used when reducing the
sample?
