ACI Aggregate Level 1 Study Material
Questions and Answers
D75
The following are three of the four purposes for which aggregates
are sampled; supply the fourth.
a) for the acceptance or rejection of materials.
b) for the control of operations at the site of use.
c) for preliminary investigation of the potential source of supply.
d) _____________________ - (correct answer) -control the product at
the source of supply
D75
Sampling should be done very carefully because it is as important as
________. - (correct answer) -testing
D75
A variety of people involved in the use of aggregate samples are
responsible for obtaining the samples. True or False? - (correct
answer) -False, should be performed by trained personnel
,D75
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. - (correct answer) -manufacturers, contractors
D75
The purchaser is responsible for obtaining samples for preliminary
investigation tests. True or False? - (correct answer) -False, should
be used for accepting or rejecting decisions
D75
Samples to be tested for quality should, when possible, be obtained
from the ______. - (correct answer) -finished product
D75
Appropriate equipment for inspection and sampling should be
provided by ________.
a) the seller
b) the purchaser
c) the salesperson
d) the user - (correct answer) -a) the seller
D75
,Use a ___________ method for selecting samples from conveyor belts.
- (correct answer) -random
D75
The four sources from which field samples can be obtained include:
a) Flowing aggregate streams
b)_____________
c)____________ or ___________
d)______________ - (correct answer) -conveyor belt, stockpile or
transportation unit, roadway bases
D75
Sampling from stockpiles should follow the standard method for all
sampling so that there will be confidence in the results obtained.
True or False? - (correct answer) -False, a sampling plan needs to
be designed
D75
The number of _________ required by any of the methods depends on
the criticality of and variation in the properties to be measured. -
(correct answer) -field samples
D75
, The field samples are based on the _________ and _________ of tests
that will be run. - (correct answer) -type, number
D75
Shipping containers for aggregate samples should be made so that
the contents will not be lost, _________ or _________. - (correct
answer) -contaminated, damaged
D75
The reason it is difficult to obtain unbiased samples from stockpiles
is because coarse and fine particles become segregated.
True or False? - (correct answer) -True
D75
_____________ can help in obtaining accurate samples from
stockpiles. - (correct answer) -Power equipment
C702
The sample splitters shall have an even number of equal width
chutes, but not less than a total of _______ for coarse aggregrate, or
________ for fine aggregrate.
a) 8, 12
b) 10, 12
Questions and Answers
D75
The following are three of the four purposes for which aggregates
are sampled; supply the fourth.
a) for the acceptance or rejection of materials.
b) for the control of operations at the site of use.
c) for preliminary investigation of the potential source of supply.
d) _____________________ - (correct answer) -control the product at
the source of supply
D75
Sampling should be done very carefully because it is as important as
________. - (correct answer) -testing
D75
A variety of people involved in the use of aggregate samples are
responsible for obtaining the samples. True or False? - (correct
answer) -False, should be performed by trained personnel
,D75
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. - (correct answer) -manufacturers, contractors
D75
The purchaser is responsible for obtaining samples for preliminary
investigation tests. True or False? - (correct answer) -False, should
be used for accepting or rejecting decisions
D75
Samples to be tested for quality should, when possible, be obtained
from the ______. - (correct answer) -finished product
D75
Appropriate equipment for inspection and sampling should be
provided by ________.
a) the seller
b) the purchaser
c) the salesperson
d) the user - (correct answer) -a) the seller
D75
,Use a ___________ method for selecting samples from conveyor belts.
- (correct answer) -random
D75
The four sources from which field samples can be obtained include:
a) Flowing aggregate streams
b)_____________
c)____________ or ___________
d)______________ - (correct answer) -conveyor belt, stockpile or
transportation unit, roadway bases
D75
Sampling from stockpiles should follow the standard method for all
sampling so that there will be confidence in the results obtained.
True or False? - (correct answer) -False, a sampling plan needs to
be designed
D75
The number of _________ required by any of the methods depends on
the criticality of and variation in the properties to be measured. -
(correct answer) -field samples
D75
, The field samples are based on the _________ and _________ of tests
that will be run. - (correct answer) -type, number
D75
Shipping containers for aggregate samples should be made so that
the contents will not be lost, _________ or _________. - (correct
answer) -contaminated, damaged
D75
The reason it is difficult to obtain unbiased samples from stockpiles
is because coarse and fine particles become segregated.
True or False? - (correct answer) -True
D75
_____________ can help in obtaining accurate samples from
stockpiles. - (correct answer) -Power equipment
C702
The sample splitters shall have an even number of equal width
chutes, but not less than a total of _______ for coarse aggregrate, or
________ for fine aggregrate.
a) 8, 12
b) 10, 12
