ASTM D6925-23
(Test Method)Standard Test Method for Preparation and Determination of the Relative Density of Asphalt Mix Specimens by Means of the Superpave Gyratory Compactor
Standard Test Method for Preparation and Determination of the Relative Density of Asphalt Mix Specimens by Means of the Superpave Gyratory Compactor
SIGNIFICANCE AND USE
4.1 This test method is used to prepare specimens for determining the volumetric and physical properties of compacted asphalt mix.
4.2 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, field control of asphalt mix, forensics, imaging, and visualization of compacted asphalt mix.
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 Specification D3666 are generally considered capable of competent and objective testing, sampling, inspection, etc. Users of this standard are cautioned that compliance with Specification D3666 alone does not completely ensure reliable results. Reliable results depend on many factors; following the suggestions of Specification D3666 or some similar acceptable guideline provides a means of evaluating and controlling some of those factors.
SCOPE
1.1 This test method covers the compaction of an asphalt mix into cylindrical specimens 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, physical property, and mechanical testing. Smaller specimens may be cut from the compacted cylindrical specimen for specific test specimen geometry requirements. The compaction procedures apply to Laboratory Mixed Laboratory Compacted (LMLC) and Plant Mixed Laboratory Compacted (PMLC) asphalt mix.
1.2 The values stated in SI units are to be regarded as standard. The values given in degrees for the angle of gyration, gyrations per minute, and hardness are mathematical conversions from the SI units and are provided for information regarding the commonly used units of degree, rotations per minute, and Rockwell hardness, respectfully.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6925 − 23
Standard Test Method for
Preparation and Determination of the Relative Density of
Asphalt Mix Specimens by Means of the Superpave
1
Gyratory Compactor
This standard is issued under the fixed designation D6925; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
1.1 This test method covers the compaction of an asphalt
2.1 ASTM Standards:
mix into cylindrical specimens using the Superpave Gyratory
D8 Terminology Relating to Materials for Roads and Pave-
Compactor (SGC). This standard also refers to the determina-
ments
tion of the relative density of the compacted specimens at any
D979/D979M Practice for Sampling Asphalt Mixtures
point in the compaction process. Compacted specimens are
D1188/D1188M Test Method for Bulk Specific Gravity and
suitable for volumetric, physical property, and mechanical
Density of Compacted Asphalt Mixtures Using Coated
testing. Smaller specimens may be cut from the compacted
Samples
cylindrical specimen for specific test specimen geometry
D2041/D2041M Test Method for Theoretical Maximum
requirements. The compaction procedures apply to Laboratory
Specific Gravity and Density of Asphalt Mixtures
Mixed Laboratory Compacted (LMLC) and Plant Mixed Labo-
D2726/D2726M Test Method for Bulk Specific Gravity and
ratory Compacted (PMLC) asphalt mix.
Density of Non-Absorptive Compacted Asphalt Mixtures
1.2 The values stated in SI units are to be regarded as
D3666 Specification for Minimum Requirements for Agen-
standard. The values given in degrees for the angle of gyration,
cies Testing and Inspecting Road and Paving Materials
gyrations per minute, and hardness are mathematical conver-
D4402/D4402M Test Method for Viscosity Determination of
sions from the SI units and are provided for information
Asphalt at Elevated Temperatures Using a Rotational
regarding the commonly used units of degree, rotations per
Viscometer
minute, and Rockwell hardness, respectfully.
D4753 Guide for Evaluating, Selecting, and Specifying Bal-
1.3 The text of this test method references notes and
ances and Standard Masses for Use in Soil, Rock, and
footnotes which provide explanatory material. These notes and
Construction Materials Testing
footnotes (excluding those in tables and figures) shall not be
D6752/D6752M Test Method for Bulk Specific Gravity and
considered as requirements of the standard.
Density of Compacted Asphalt Mixtures Using Automatic
1.4 This standard does not purport to address all of the
Vacuum Sealing Method
safety concerns, if any, associated with its use. It is the
D6857/D6857M Test Method for Maximum Specific Grav-
responsibility of the user of this standard to establish appro-
ity and Density of Asphalt Mixtures Using Automatic
priate safety, health, and environmental practices and deter-
Vacuum Sealing Method
mine the applicability of regulatory limitations prior to use.
D7115 Test Method for Measurement of Superpave Gyra-
1.5 This international standard was developed in accor-
tory Compactor (SGC) Internal Angle of Gyration Using
dance with internationally recognized principles on standard-
Simulated Loading
ization established in the Decision on Principles for the
E10 Test Method for Brinell Hardness of Metallic Materials
Development of International Standards, Guides and Recom-
E18 Test Methods for Rockwell Hardness of Metallic Ma-
mendations issued by the World Trade Organization Technical
terials
Barriers to Trade (TBT) Committee.
E2251 Specification for Liquid-in-Glass ASTM Thermom-
eters with Low-Hazard Precision Liquids
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.20 on
2
Mechanical Tests of Asphalt Mixtures. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2023. Published January 2024. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2003. Last previous edition approved in 2015 as D6925 – 15. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D6925-23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6925 − 23
3
2.2 AASHTO Standards: 5. Apparatus
R 18 Standard Practice for Establishing
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6925 − 15 D6925 − 23
Standard Test Method for
Preparation and Determination of the Relative Density of
Asphalt Mix Specimens by Means of the Superpave
1
Gyratory Compactor
This standard is issued under the fixed designation D6925; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers the compaction of an asphalt mix into cylindrical specimens 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, physical property, and mechanical testing. Smaller
specimens may be cut from the compacted cylindrical specimen for specific test specimen geometry requirements. The compaction
procedures apply to Laboratory MixMixed Laboratory Compacted (LMLC) and Plant MixMixed Laboratory Compacted (PMLC)
asphalt mix.
1.2 The values stated in SI units are to be regarded as standard. The valuevalues given in degrees for the angle of gyration is a
mathematical conversiongyration, gyrations per minute, and hardness are mathematical conversions from the SI units and isare
provided for information regarding the commonly used unit of degree.units of degree, rotations per minute, and Rockwell hardness,
respectfully.
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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D8 Terminology Relating to Materials for Roads and Pavements
D979/D979M Practice for Sampling Asphalt Mixtures
D1188D1188/D1188M Test Method for Bulk Specific Gravity and Density of Compacted Asphalt Mixtures Using Coated
Samples
1
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.20 on Mechanical
Tests of Asphalt Mixtures.
Current edition approved Jan. 1, 2015Dec. 1, 2023. Published January 2015January 2024. Originally approved in 2003. Last previous edition approved in 20092015 as
D6925 – 09.D6925 – 15. DOI: 10.1520/D6925-15.10.1520/D6925-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6925 − 23
D2041D2041/D2041M Test Method for Theoretical Maximum Specific Gravity and Density of Asphalt Mixtures
D2726D2726/D2726M Test Method for Bulk Specific Gravity and Density of Non-Absorptive Compacted Asphalt Mixtures
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D4402D4402/D4402M 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
D6752/D6752M Test Method for Bulk Specific Gravity and Density of Compacted Asphalt Mixtures Using Automatic Vacuum
Sealing Method
D6857/D6857M Test Method for Maximum Specific Gravity and Density of Asphalt Mixtures Using Automatic Vacuum Sealing
Method
D7115 Test Method for Measurement of Superpave Gyratory Compactor (SGC) Internal Angle of Gyration Using Simulated
Loading
E10 Test Method for Brinell
...
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