ACI Aggregate Testing Technician - Level 1 - Section 4 Exam Questions and Answers 2024

ACI Aggregate Testing Technician - Level 1 - Section 4 Exam Questions and Answers 2024 In this test method a set of sieves with progressively _____ openings determines the ______ of the size of the particles sampled. - Answer-Smaller, distribution The purpose of the test is to determine the _____ of the materials used as aggregates or proposed to be used as aggregates. - Answer-Grading Results of the test may also be useful in developing relationships related to porosity and packing. True or False? - Answer-True For material finer than the 75-μm sieve, you must use Test Method T 98. True or False? - Answer-False; Method T 11 Balances for testing fine aggregate must be readable to _____ . - Answer-0.1 g When a sample is 20 kg or more, a ____ shaker is recommended. - Answer-Mechanical sieve More than ____ min. is considered excessive time spent in the mechanical sieve shaker and may result in _____ of the sample. - Answer-10, degradation The size of the field sample should be that shown in Practice T 2, or ____ that required in the chart under 7.4 and 7.5 (except as modified in 7.6), whichever is greater. - Answer-Four times