ASTM D7405-20
(Test Method)Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer
Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer
SIGNIFICANCE AND USE
5.1 This test method is used to identify the presence of elastic response in a binder and the change in elastic response at two different stress levels. Non-recoverable creep compliance has been shown to be an indicator of the resistance of an asphalt binder to permanent deformation under repeated load.
5.2 This test method is also useful as a surrogate for other test methods used to measure elasticity in asphalt binders such as Test Method D5801 (toughness and tenacity), Test Method D6084/D6084M (elastic recovery), and Test Method D7175 (DSR phase angle).
Note 2: 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 determination of percent recovery and non-recoverable creep compliance of asphalt binders by means of multiple stress creep and recovery (MSCR) testing. The MSCR test is conducted using the dynamic shear rheometer (DSR) at a specified temperature.
1.2 This standard is appropriate for unaged material, material aged in accordance with Test Method D2872 (RTFOT), material aged in accordance with Practice D6521 (PAV), and material aged in accordance with both Test Method D2872 and Practice D6521.
Note 1: The majority of development work on this test method was performed on material aged in accordance with Test Method D2872 (RTFOT).
1.3 The percent recovery is intended to provide a means to determine the presence of elastic response and stress dependence of polymer-modified and unmodified asphalt binders.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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.
1.6 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.
1.7 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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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: D7405 − 20
Standard Test Method for
Multiple Stress Creep and Recovery (MSCR) of Asphalt
1,2
Binder Using a Dynamic Shear Rheometer
This standard is issued under the fixed designation D7405; 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 determination of percent
recovery and non-recoverable creep compliance of asphalt
2. Referenced Documents
binders by means of multiple stress creep and recovery
3
2.1 ASTM Standards:
(MSCR) testing. The MSCR test is conducted using the
C670 Practice for Preparing Precision and Bias Statements
dynamic shear rheometer (DSR) at a specified temperature.
for Test Methods for Construction Materials
1.2 This standard is appropriate for unaged material, mate-
D8 Terminology Relating to Materials for Roads and Pave-
rial aged in accordance with Test Method D2872 (RTFOT),
ments
material aged in accordance with Practice D6521 (PAV), and
D2872 Test Method for Effect of Heat and Air on a Moving
material aged in accordance with both Test Method D2872 and
Film of Asphalt (Rolling Thin-Film Oven Test)
Practice D6521.
D3666 Specification for Minimum Requirements for Agen-
NOTE 1—The majority of development work on this test method was
cies Testing and Inspecting Road and Paving Materials
performed on material aged in accordance with Test Method D2872
D5801 Test Method for Toughness and Tenacity of Asphalt
(RTFOT).
Materials
1.3 The percent recovery is intended to provide a means to
D6084/D6084M Test Method for Elastic Recovery of As-
determine the presence of elastic response and stress depen-
phalt Materials by Ductilometer
dence of polymer-modified and unmodified asphalt binders.
D6373 Specification for Performance Graded Asphalt
1.4 The values stated in SI units are to be regarded as
Binder
standard. No other units of measurement are included in this
D6521 Practice for Accelerated Aging of Asphalt Binder
standard.
Using a Pressurized Aging Vessel (PAV)
1.5 The text of this standard references notes and footnotes D7175 Test Method for Determining the Rheological Prop-
erties of Asphalt Binder Using a Dynamic Shear Rheom-
which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered eter
4
as requirements of the standard.
2.2 AASHTO Standards:
M 332 Specification for Performance-Graded Asphalt
1.6 This standard does not purport to address all of the
Binder Using Multiple Stress Creep Recovery (MSCR)
safety concerns, if any, associated with its use. It is the
Test
responsibility of the user of this standard to establish appro-
T 350 Method of Test for Multiple Stress Creep Recovery
priate safety, health, and environmental practices and deter-
(MSCR) Test of Asphalt Binder Using a Dynamic Shear
mine the applicability of regulatory limitations prior to use.
Rheometer (DSR)
1.7 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3. Terminology
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 3.1 Definitions—Fordefinitionsofgeneraltermsusedinthis
standard, refer to Terminology D8.
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
3
and Paving Materials and is the direct responsibility of Subcommittee D04.44 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Rheological Tests. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved March 1, 2020. Published March 2020. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 2008. Last previous edition approved in 2015 as D7405 – 15. DOI: the ASTM website.
4
10.1520/D7405-20. Available from American Association of State Highway and Transportation
2
This test method is based on a work product of the Federal Highway Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
Administration. A similar standard is published as AASHTO TP 70. http://www.transportation.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D7405 − 20
3.2 Definitions of Terms Specific to This Standard: 8. P
...
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: D7405 − 15 D7405 − 20
Standard Test Method for
Multiple Stress Creep and Recovery (MSCR) of Asphalt
1,2
Binder Using a Dynamic Shear Rheometer
This standard is issued under the fixed designation D7405; 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 determination of percent recovery and non-recoverable creep compliance of asphalt binders by
means of Multiple Stress Creep and Recoverymultiple stress creep and recovery (MSCR) testing. The MSCR test is conducted
using the Dynamic Shear Rheometerdynamic shear rheometer (DSR) at a specified temperature.
1.2 This standard is appropriate for unaged material, material aged in accordance with Test Method D2872 (RTFO),(RTFOT),
material aged in accordance with Practice D6521 (PAV), and material aged in accordance with both Test Method D2872 and
Practice D6521.
NOTE 1—The majority of development work on this test method was performed on material aged in accordance with Test Method D2872
(RTFO).(RTFOT).
1.3 The percent recovery is intended to provide a means to determine the presence of elastic response and stress dependence
of polymer modified polymer-modified and unmodified asphalt binders.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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.
1.6 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.7 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
3
2.1 ASTM Standards:
C670 Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials
D8 Terminology Relating to Materials for Roads and Pavements
D2872 Test Method for Effect of Heat and Air on a Moving Film of Asphalt (Rolling Thin-Film Oven Test)
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
D5801 Test Method for Toughness and Tenacity of Asphalt Materials
D6084D6084/D6084M Test Method for Elastic Recovery of Asphalt Materials by Ductilometer
D6373 Specification for Performance Graded Asphalt Binder
D6521 Practice for Accelerated Aging of Asphalt Binder Using a Pressurized Aging Vessel (PAV)
D7175 Test Method for Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer
1
This test method is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.44 on Rheological
Tests.
Current edition approved Dec. 1, 2015March 1, 2020. Published January 2016March 2020. Originally approved in 2008. Last previous edition approved in 20102015 as
D7405 – 10a.D7405 – 15. DOI: 10.1520/D7405-15.10.1520/D7405-20.
2
This test method is based on a work product of the Federal Highway Administration. A similar standard is published as AASHTO TP 70.
3
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 ----------------------
D7405 − 20
4
2.2 AASHTO Standards:
M 332 Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test
T 350 Method of Test for Multiple Stress Creep Recovery (MSCR) Test of Asphalt Binder Using a Dynamic Shear Rheometer
(DSR)
3. Terminology
3.1 Definitions—For definitions of general terms used i
...
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