ACI Aggregate Testing Technician - Level 1 - Section 8

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 warning that injurious amounts of ____ may be present. Organic impurities A dark color in the test sample is a warning sign. True or False? True When a sample subjected to this test produces a color lighter than the standard color solution, it is advisable to perform the test for the effect of organic impurities on the strength of the mortar. True or False? False; when it produces a darker color When organic impurities are evident in the fine aggregate tested, it is advisable to perform Test Method _____ . T71 For this test, bottles of at least 3 inch outside thickness should be used. True or False? False; thickness no more than 2.5 in. Unmarked bottles may be calibrated and scribed with graduations by the user. True or False? True In such case, graduation marks are required at only ____ points. Three The bottles used should be a light green in color. True or False? False; Colorless glass The graduations on the bottles should always be in ounces. True or False? False; milliliters or ounces Bottles used for tests should: a) have water-tight caps or stoppers b) be light green in color c) be more than 2-1/2 in. thick d) all of the above e) none of the above a) have water-tight caps or stoppers The amount of Sodium Hydroxide Solution (NaOH) needed by mass for the test is _____ %. 3