ACI Aggregate Testing Technician - Level 1 - Section 1 to Section 8

ACI Aggregate Testing Technician - Level 1 - Section 1. AASHTO T 2 / ASTM D75 Four purposes for which aggregates are sampled. a) for the acceptance or rejection of materials. b) for the control of operations at the site of use. c) for preliminary investigation of the potential source of suppl...

ACI Aggregate Testing Technician - Level 1 - Section 2 Unless the procedures recommended here are carried out precisely, a ____ sample can result. Nonrepresentative Generally speaking, small samples are most representative of the total supply. True or False? False; large samples are more repre...

ACI Aggregate Testing Technician - Level 1 - Section 3 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 specifi...

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...

ACI Aggregate Testing Technician - Level 1 - Section 5 The method is appropriate for coarse but not ____ aggregate. Lightweight SSD refers to _____ - _____ - _____ condition. saturated-surface-dry To calculate the volume of aggregate in a mixture (including the voids between the particles) is...

ACI Aggregate Testing Technician - Level 1 - Section 6 Relative density (specific gravity) (OD) is used when the aggregate is ____ while relative density (specific gravity) (SSD) is used when the aggregate is ______ . Oven Dry, Saturated Surface-Dry ____ does not include the pore space within p...

ACI Aggregate Testing Technician - Level 1 - Section 7 For most purposes, this test method measures the moisture in a test sample more reliably than the test sample ______ . Can be made to represent the aggregate supply A ventilated controlled-temperature oven should be used for the test when t...

ACI Aggregate Testing Technician - Level 1 - Section 8 This test method involves the use of hazardous materials. True or False? True The user of these standards is responsible for any safety problems associated with them. True or False? True The principal value of this test is to furnish a wa...