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ACI - Aggregate Base Testing Technician Test Questions & Answers (A+ Graded 100% Verified)
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ACI - Aggregate Base Testing Technician Test Questions & Answers (A+ Graded 100% Verified)
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ACI - Aggregate Base Testing TechnicianTesting - ANS Sampling should be done very carefully because it is as important as
____________.
Conveyor 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.
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.
5, random - ANS In miniature stockpile sampling, obtain the sample by selecting at least ____
increments of material from ____ locations in the stockpile.
60*C/140*F - ANS The drying apparatus used for dry preparation of a sample is any suitable
device capable of drying samples at a temperature not exceeding _____.
representative, fines - ANS A suitable sample splitter is one capable of obtaining ____ portions
of the sample without appreciable loss of ____.
110, 60 - ANS For particle size analysis, material passing a 2.00mm (No. 10) sieve is required in
amounts equal to approximately ___ g for sandy soils and approximately ___g for silty or clayey
soils.
25, 10 - ANS For specific gravity, material passing a 2.00mm (10) sieve is requires in amounts
of at least ____g when the volumetric flask is used and at least ____g when the stoppered
bottle is used.
2.00mm (No. 10), Two - ANS For the physical test, the remaining portion of the material passing
the _____ sieve shall be separated into ____ parts by means of a 0.425mm (40) sieve.
Pulverizing operation - ANS For the physical test, if the sample contains brittle particles such as
flakes of mica, fragments of seashells, etc, the ____________ shall be done carefully to free the
finer material that adheres to the coarse particles.
The liquid limit of a soil - ANS What is defined as he water content at which the soil passes from
a plastic to a liquid?
corrosion, mass, disintegration - ANS (LL) suitable containers should be made of material
resistant to ____ and not subject to change in ____ or ___ on repeated heating and cooling.
100g - ANS (LL) A sample with a mass of about ___ shall be taken from the thoroughly mixed
portion of the material.
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