ASTM D6925 - 09

    Standard Test Method for Preparation and Determination of the Relative Density of Hot Mix Asphalt (HMA) Specimens by Means of the Superpave Gyratory Compactor

    Active Standard ASTM D6925 | Developed by Subcommittee: D04.20

    Book of Standards Volume: 04.03


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    Significance and Use

    This test method is used to prepare specimens for determining the volumetric and physical properties of compacted HMA mix.

    This test method is useful for monitoring the density of test specimens during the compaction process. This test method is suited for the laboratory design and field control of HMA.

    Note 1—The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used. Agencies that meet the criteria of Standard Practice D 3666 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D 3666 alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of Practice D 3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.

    1. Scope

    1.1 This test method covers the compaction of cylindrical specimens of hot mix asphalt (HMA) using the Superpave Gyratory Compactor (SGC). This standard also refers to the determination of the relative density of the compacted specimens at any point in the compaction process. Compacted specimens are suitable for volumetric and physical property testing.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.3 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.

    1.4 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    AASHTO Standards

    AASHTOT312 Preparing and Determining the Density of Hot-Mix Asphalt (HMA) Specimens by means of the Superpave Gyratory Compactor

    Other References

    AsphaltInstituteMS-2 Mix Design Methods for Asphalt Concrete Available from Asphalt Institute, 2696 Research Park Dr., Lexington, KY 40511, http://www.asphaltinstitute.org.

    ASTM Standards

    D1188 Test Method for Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Coated Samples

    D2041 Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures

    D2726 Test Method for Bulk Specific Gravity and Density of Non-Absorptive Compacted Bituminous Mixtures

    D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials

    D4402 Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer

    D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing


    ICS Code

    ICS Number Code 93.080.20 (Road construction materials)

    UNSPSC Code

    UNSPSC Code 30111509(Asphalt based concrete)


    DOI: 10.1520/D6925-09

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