ACI Aggregate Testing Technician - Level 1 - Section 6
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 particles that is accessible to water. Apparent specific gravity There may be a low absorption in aggregates mined below the water table if they haven't been allowed to dry. True or False? False; a higher absorption Equipment needed to carry out the gravimetric procedure includes: 1) _____ ; 2) ______ ; 3) _____ ; and 4) ______ . Balance, pycnometer, mold, tamper The balance should hold ____ kg or more and a flask (container) of the type described in AASHTO ___ is suitable for use. 1, T 133 After the sample of fine aggregate has been dried and cooled, it should be covered with ____ for ____ hours. Water, 15 to 19 The sample, after soaking, should be spread on a flat, absorbent surface to dry. True or False?
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