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ASTM C29/C29M-17

Historical Revision

Standard Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate

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1.1 This test method covers the determination of bulk density (“unit weight”) of aggregate in a compacted or loose condition, and calculated voids between particles in fine, coarse, or mixed aggregates based on the same determination. This test method is applicable to aggregates not exceeding 125 mm [5 in.] in nominal maximum size.

Note 1: Unit weight is the traditional terminology used to describe the property determined by this test method, which is weight per unit volume (more correctly, mass per unit volume or density).

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard, as appropriate for a specification with which this test method is used. An exception is with regard to sieve sizes and nominal size of aggregate, in which the SI values are the standard as stated in Specification E11. Within the text, inch-pound units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


4.1 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.

4.2 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.

4.3 A procedure is included for computing the percentage of voids between the aggregate particles based on the bulk density determined by this test method.

SDO ASTM: ASTM International
Document Number C29
Publication Date Jan. 1, 2017
Language en - English
Page Count 5
Revision Level 17
Supercedes
Committee C09.20
Publish Date Document Id Type View
Oct. 1, 2023 C0029_C0029M-23 Revision
April 1, 2017 C0029_C0029M-17A Revision
Jan. 1, 2017 C0029_C0029M-17 Revision
Feb. 1, 2016 C0029_C0029M-16 Revision
Dec. 1, 2009 C0029_C0029M-09 Revision
Aug. 1, 2007 C0029_C0029M-07 Revision
July 10, 1997 C0029_C0029M-97 Revision
July 10, 1997 C0029_C0029M-97R03 Reaffirmation