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ASTM D6752-09

Current Revision

Standard Test Method for Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Automatic Vacuum Sealing Method

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1.1 This test method covers the determination of bulk specific gravity of compacted bituminous mixtures by the vacuum sealing method.

1.2 This method can be used for compacted cylindrical and cubical bituminous laboratory and field specimens.

1.3 The bulk specific gravity of the compacted bituminous mixtures may be used in calculating the unit weight of the mixture.

1.4 The values stated in SI units are to be regarded as the standard. The values given in parenthesis are for information only.

1.5 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 requirements prior to use.

The results obtained from this method can be used to determine the unit weight of compacted bituminous mixtures and in conjunction with Test Method D3203, to obtain percent air voids. These values in turn may be used in determining the relative degree of compaction.

Since specific gravity has no units, it must be converted to density in order to do calculations that require units. This conversion is made by multiplying the specific gravity at a given temperature by the density of water at the same temperature.

This method can be used for 100 mm (4 in.) and 150 mm (6 in.) diameter cylindrical as well as cubical asphalt specimens to correct for inconsistencies in sample weight determinations resulting from drainage of water from samples and inaccuracy in saturated surface dry weight of absorptive coarse and open graded mixes. Mixes such as Stone Matrix Asphalt (SMA), porous friction course, and coarse graded mixes with significant surface texture and interconnected voids can be tested with this method. Follow manufacturer recommendation for appropriate bag sizes to be utilized with cubical and abnormally shaped samples.

Note 1—The personnel and equipment used in performing this test can be evaluated in accordance with Practice D3666.

SDO ASTM: ASTM International
Document Number D6752
Publication Date Dec. 1, 2009
Language en - English
Page Count 4
Revision Level 09
Supercedes
Committee D04.21
Publish Date Document Id Type View
Dec. 1, 2009 D6752-09 Revision
Dec. 1, 2003 D6752-03E01 Revision
Dec. 1, 2003 D6752-03 Revision
Dec. 10, 2002 D6752-02A Revision
Jan. 10, 2002 D6752-02 Revision