ACI Aggregate Testing Technician - Level 1 - Section 3 Questions With Correct Answers 2025 (AASHTO T 11/ASTM C117 Standard Method of Test for Materials Finer than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing) During this test method, water-soluble materials, clay particles, and incidental aggregate particles are removed from the aggregate. True or False? - ANS-True Of the two possible test procedures, Procedure A is to be used unless otherwise specified. True or False? - ANS-True In one of the methods only ____ is used for washing and in the other method a ____ is used as well. - ANS-Water, wetting agent The purpose of using a wetting agent is to ____ finer than the 75 μm sieve from the coarser material. - ANS-Loosen material Dry sieving separates out the finer particles more effectively than wet sieving. True or False? - ANS-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. - ANS-
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