ASTM D8044-23
(Test Method)Standard Test Method for Evaluation of Asphalt Mixture Cracking Resistance Using the Semi-Circular Bend Test (SCB) at Intermediate Temperatures
Standard Test Method for Evaluation of Asphalt Mixture Cracking Resistance Using the Semi-Circular Bend Test (SCB) at Intermediate Temperatures
SIGNIFICANCE AND USE
5.1 The critical strain energy release rate parameter, Jc, is used to compare the cracking resistance of asphalt mixtures prepared with different asphalt binder and aggregate types prepared to meet the volumetric requirements of differing traffic levels tested at intermediate temperatures.
5.2 The critical strain energy release rate parameter, Jc, is an engineering property and a performance indicator at intermediate temperature cracking.
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 procedures for preparation, testing, and measurement of asphalt mixture cracking resistance at intermediate temperatures using semi-circular bend (SCB) geometry of laboratory-prepared or pavement core asphalt mixture samples tested monotonically. The SCB sample is a half-disk with a notch cut aligned vertically in parallel with the testing loading. The test method describes the determination of the critical strain energy release rate parameter, Jc, and other parameters determined from the load-displacement curve. These parameters can be used to rank the resistance of asphalt mixtures to cracking.
1.2 The text of this standard 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.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 Since a complete Precision and Bias statement for this standard has not been developed, the test method is to be used for research and informational purposes only. Therefore, this standard should not be used for acceptance or rejection of a material for purchasing purposes.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 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: D8044 − 23
Standard Test Method for
Evaluation of Asphalt Mixture Cracking Resistance Using
the Semi-Circular Bend Test (SCB) at Intermediate
1
Temperatures
This standard is issued under the fixed designation D8044; 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 mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This test method covers the procedures for preparation,
testing, and measurement of asphalt mixture cracking resis-
2. Referenced Documents
tance at intermediate temperatures using semi-circular bend
2
2.1 ASTM Standards:
(SCB) geometry of laboratory-prepared or pavement core
D979/D979M Practice for Sampling Asphalt Mixtures
asphalt mixture samples tested monotonically. The SCB
D2041/D2041M Test Method for Theoretical Maximum
sample is a half-disk with a notch cut aligned vertically in
Specific Gravity and Density of Asphalt Mixtures
parallel with the testing loading. The test method describes the
D2726/D2726M Test Method for Bulk Specific Gravity and
determination of the critical strain energy release rate
Density of Non-Absorptive Compacted Asphalt Mixtures
parameter, J , and other parameters determined from the
c
D3203/D3203M Test Method for Percent Air Voids in Com-
load-displacement curve. These parameters can be used to rank
pacted Asphalt Mixtures
the resistance of asphalt mixtures to cracking.
D3666 Specification for Minimum Requirements for Agen-
1.2 The text of this standard references notes and footnotes
cies Testing and Inspecting Road and Paving Materials
which provide explanatory material. These notes and footnotes
D5361/D5361M Practice for Sampling Compacted Asphalt
(excluding those in tables and figures) shall not be considered
Mixtures for Laboratory Testing
as requirements of the standard.
D6373 Specification for Performance-Graded Asphalt
Binder
1.3 The values stated in SI units are to be regarded as
D6857/D6857M Test Method for Maximum Specific Grav-
standard. No other units of measurement are included in this
standard. ity and Density of Asphalt Mixtures Using Automatic
Vacuum Sealing Method
1.4 Since a complete Precision and Bias statement for this
D6925 Test Method for Preparation and Determination of
standard has not been developed, the test method is to be used
the Relative Density of Asphalt Mix Specimens by Means
for research and informational purposes only. Therefore, this
of the Superpave Gyratory Compactor
standard should not be used for acceptance or rejection of a
E4 Practices for Force Calibration and Verification of Test-
material for purchasing purposes.
ing Machines
1.5 This standard does not purport to address all of the
E29 Practice for Using Significant Digits in Test Data to
safety concerns, if any, associated with its use. It is the
Determine Conformance with Specifications
responsibility of the user of this standard to establish appro-
E178 Practice for Dealing With Outlying Observations
priate safety, health, and environmental practices and deter-
E399 Test Method for Linear-Elastic Plane-Strain Fracture
mine the applicability of regulatory limitations prior to use.
Toughness of Metallic Materials
1.6 This international standard was developed in accor-
E2309/E2309M Practices for Verification of Displacement
dance with internationally recognized principles on standard-
Measuring Systems and Devices Used in Material Testing
ization established in the Decision on Principles for the
Machines
Development of International Standards, Guides and Recom-
E3029 Practice for Determining Relative Spectral Correc-
tion Factors for Emission Signal of Fluorescence Spec-
trometers
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.26 on
2
Fundamental/Mechanistic Tests. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved May 15, 2023. Published May 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2016. Last previous edition approved in 2016 as D8044 – 16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D8044-23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D8044 − 23
3
...
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: D8044 − 16 D8044 − 23
Standard Test Method for
Evaluation of Asphalt Mixture Cracking Resistance
usingUsing the Semi-Circular Bend Test (SCB) at
1
Intermediate Temperatures
This standard is issued under the fixed designation D8044; 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 procedures for preparation, testing, and measurement of asphalt mixture cracking resistance at
Long Term Pavement Performance (LTPP) database intermediate temperatures using semi-circular bend (SCB) geometry
laboratory preparedof laboratory-prepared or pavement core asphalt mixmixture samples tested monotonically. The SCB sample
is a half-disk with a notch cut parallel to the loading and vertical axis. aligned vertically in parallel with the testing loading. The
test method describes the determination of the critical strain energy release rate, rate parameter, J , and other parameters
c
determined from the load-displacement curve. These parameters can be used to rank the resistance of asphalt mixtures to cracking.
1.2 The text of this standard 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.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.Since a complete Precision and Bias statement for this standard has not been developed, the test method is to be used
for research and informational purposes only. Therefore, this standard should not be used for acceptance or rejection of a material
for purchasing purposes.
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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.6 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:
1
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.26 on
Fundamental/Mechanistic Tests.
Current edition approved July 1, 2016May 15, 2023. Published August 2016May 2023. Originally approved in 2016. Last previous edition approved in 2016 as
D8044 – 16. DOI: 10.1520/D8044-16.10.1520/D8044-23.
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 ----------------------
D8044 − 23
D979/D979M Practice for Sampling Asphalt Mixtures
D2041/D2041M Test Method for Theoretical Maximum Specific Gravity and Density of Asphalt Mixtures
D2726/D2726M Test Method for Bulk Specific Gravity and Density of Non-Absorptive Compacted Asphalt Mixtures
D3203/D3203M Test Method for Percent Air Voids in Compacted Asphalt Mixtures
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D5361/D5361M Practice for Sampling Compacted Asphalt Mixtures for Laboratory Testing
D6373 Specification for Performance-Graded Asphalt Binder
D6857/D6857M Test Method for Maximum Specific Gravity and Density of Asphalt Mixtures Using Automatic Vacuum Sealing
Method
D6925 Test Method for Preparation and Determination of the Relative Density of Asphalt Mix Specimens by Means of the
Superpave Gyratory Compact
...
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