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Bulk Density (“Unit Weight”) and Voids in Aggregate

 
This test method is often used to determine bulk density values that are necessary for use for many methods of selecting proportions for concrete mixtures. The bulk density also may be used for determining mass/volume relationships for conversions in purchase agreements. However, the relationship between degree of compaction of aggregates in a hauling unit or stockpile and that achieved in this test method is unknown. Further, aggregates in hauling units and stockpiles usually contain absorbed and surface moisture (the latter affecting bulking), while this test method determines the bulk density on a dry basis. A procedure is included for computing the percentage of voids between the aggregate particles based on the bulk density determined by this test method.
Keywords
ASTM C29 - Bulk Density - Coarse Aggregates - Fine Aggregates - Porosity - Powder Compaction - Size - Voids Content
ICS CODE
19.060 (Mechanical testing)
UNSPSC CODE
30111800 (Aggregates)
CITATION FORMAT
ASTM C29 / C29M-17a, Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate, ASTM International, West Conshohocken, PA, 2017, www.astm.org