ACI AGGREGATE TESTING TECHNICIAN - LEVEL 1 - SECTION 3 EXAM QUESTIONS WITH COMPLETE ANSWERS
During this test method, water-soluble materials, clay particles, and incidental aggregate particles are removed from the aggregate. True or False?
True
Of the two possible test procedures, Procedure A...
During this test method, water-soluble materials, clay particles, and incidental
aggregate particles are removed from the aggregate. True or False?
True
Of the two possible test procedures, Procedure A is to be used unless otherwise
specified. True or False?
True
In one of the methods only ____ is used for washing and in the other method a
____ is used as well.
Water, wetting agent
The purpose of using a wetting agent is to ____ finer than the 75 μm sieve from
the coarser material.
Loosen material
Dry sieving separates out the finer particles more effectively than wet sieving.
True or False?
False; wet sieving works better
The kinds of materials that respond well to wetting agents include ____ coatings,
coatings on aggregates that have been extracted from mixtures.
Clay, bituminous
Complete the list of equipment needed to carry out the procedures:
a) a balance or scale
b) _________
c)a ________
d)an _______
Two sieves (No. 200 & No. 8-16), container (pan or vessel), oven
A common wetting agent is ordinary liquid _____.
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