ACI - Aggregate Base Testing
Technician Questions & Answers8
Testing - ANSWERS-Sampling should be done very carefully because it is as important as
____________.
Conveyer belts
Transport units
Roadways
Stockpiles - ANSWERS-What are the four sources from which field samples can be obtained?
contaminated, damaged - ANSWERS-Sampling containers for aggregate samples should be
made so that the contents will not be lost, _____ or _____.
Nonrepresentative sample - ANSWERS-Not using correct procedures for reducing samples to
testing size can result in a _____.
False - ANSWERS-T or F
Generally, small samples are most representative of the total supply.
True - ANSWERS-T or F
There are some instances in which differences between test samples can't be avoided.
Laws of chance - ANSWERS-What determines whether large-size particles are equally
distributed among test samples that have been reduced?
, Method A, mechanical splitter - ANSWERS-Which method of reducing a sample must be used
with fine, dry aggregate?
Moisten the sample - ANSWERS-What must be done to the sample if method B or C is used?
Dry the sample - ANSWERS-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 - ANSWERS-Method C, miniature
stockpiling, cannot be used for which type of aggregate?
Method A - ANSWERS-Which method involves the use of chutes, holding receptacles, and
hoppers or straight-edged pans?
8 - ANSWERS-Sample splitters must have how many equal width chutes for coarse aggregate?
12 - ANSWERS-Sample splitters must have how many equal width chutes for fine aggregate?
conical pile - ANSWERS-In Methods B and C the sample is shoveled into a ____ before it is
flattened and divided.
Canvas blanket or tear resistant tarp - ANSWERS-When using Method B, what is an alternate
surface that can be used when reducing the sample?
diagonally opposite - ANSWERS-When quartering a sample, retain two _________ quarters and
reject the other two.
5, random - ANSWERS-In miniature stockpile sampling, obtain the sample by selecting at least
____ increments of material from ____ locations in the stockpile.
Technician Questions & Answers8
Testing - ANSWERS-Sampling should be done very carefully because it is as important as
____________.
Conveyer belts
Transport units
Roadways
Stockpiles - ANSWERS-What are the four sources from which field samples can be obtained?
contaminated, damaged - ANSWERS-Sampling containers for aggregate samples should be
made so that the contents will not be lost, _____ or _____.
Nonrepresentative sample - ANSWERS-Not using correct procedures for reducing samples to
testing size can result in a _____.
False - ANSWERS-T or F
Generally, small samples are most representative of the total supply.
True - ANSWERS-T or F
There are some instances in which differences between test samples can't be avoided.
Laws of chance - ANSWERS-What determines whether large-size particles are equally
distributed among test samples that have been reduced?
, Method A, mechanical splitter - ANSWERS-Which method of reducing a sample must be used
with fine, dry aggregate?
Moisten the sample - ANSWERS-What must be done to the sample if method B or C is used?
Dry the sample - ANSWERS-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 - ANSWERS-Method C, miniature
stockpiling, cannot be used for which type of aggregate?
Method A - ANSWERS-Which method involves the use of chutes, holding receptacles, and
hoppers or straight-edged pans?
8 - ANSWERS-Sample splitters must have how many equal width chutes for coarse aggregate?
12 - ANSWERS-Sample splitters must have how many equal width chutes for fine aggregate?
conical pile - ANSWERS-In Methods B and C the sample is shoveled into a ____ before it is
flattened and divided.
Canvas blanket or tear resistant tarp - ANSWERS-When using Method B, what is an alternate
surface that can be used when reducing the sample?
diagonally opposite - ANSWERS-When quartering a sample, retain two _________ quarters and
reject the other two.
5, random - ANSWERS-In miniature stockpile sampling, obtain the sample by selecting at least
____ increments of material from ____ locations in the stockpile.
