ACI Aggregate Testing Technician - Level 1 - Section 4

ACI Aggregate Testing Technician - Level 1 - Section 4 In this test method a set of sieves with progressively _____ openings determines the ______ of the size of the particles sampled. Smaller, distribution The purpose of the test is to determine the _____ of the materials used as aggregates or proposed to be used as aggregates. Grading Results of the test may also be useful in developing relationships related to porosity and packing. True or False? True For material finer than the 75-μm sieve, you must use Test Method T 98. True or False? False; Method T 11 Balances for testing fine aggregate must be readable to _____ . 0.1 g When a sample is 20 kg or more, a ____ shaker is recommended. Mechanical sieve More than ____ min. is considered excessive time spent in the mechanical sieve shaker and may result in _____ of the sample. 10, degradation The size of the field sample should be that shown in Practice T 2, or ____ that