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ASTM D7405-10

(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 <a href="#fn00002"></a>

SIGNIFICANCE AND USE
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.
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 (Elastic Recovery), and Test Method D7175 (DSR phase angle).
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 (RTFO), 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).
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 A precision and bias statement for this standard has not been developed at this time. Therefore, this standard should not be used for acceptance or rejection of a material for purchasing purposes.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Dec-2009
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
D04 - Road and Paving Materials
Drafting Committee
D04.44 - Rheological Tests
Current Stage
Ref Project

Relations

Replaces
ASTM D7405-08a - Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer <a href="#fn00002"></a>
Effective Date
01-Jan-2010
Referred By
ASTM D7173-20 - Standard Practice for Determining the Separation Tendency of Polymer from Polymer-Modified Asphalt
Effective Date
01-Jan-2010
Referred By
ASTM D7944-22 - Standard Practice for Recovery of Emulsified Asphalt Residue Using a Vacuum Oven
Effective Date
01-Jan-2010
Referred By
ASTM D8239-23 - Standard Specification for Performance-Graded Asphalt Binder Using the Multiple Stress Creep and Recovery (MSCR) Test
Effective Date
01-Jan-2010

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ASTM D7405-10 - Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer <a href="#fn00002"></a>ASTM D7405-10 - Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer <a href="#fn00002"></a>
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ASTM D7405-10 - Standard Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer <a href="#fn00002"></a>
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation:D7405–10
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 2. Referenced Documents
3
1.1 This test method covers the determination of percent 2.1 ASTM Standards:
recovery and non-recoverable creep compliance of asphalt C670 Practice for Preparing Precision and Bias Statements
binders by means of Multiple Stress Creep and Recovery for Test Methods for Construction Materials
(MSCR) testing. The MSCR test is conducted using the D8 Terminology Relating to Materials for Roads and Pave-
Dynamic Shear Rheometer (DSR) at a specified temperature. ments
1.2 This standard is appropriate for unaged material, mate- D2872 Test Method for Effect of Heat andAir on a Moving
rial aged in accordance with Test Method D2872 (RTFO), Film of Asphalt (Rolling Thin-Film Oven Test)
material aged in accordance with Practice D6521 (PAV), and D5801 Test Method for Toughness and Tenacity of Bitumi-
material aged in accordance with both Test Method D2872 and nous Materials
Practice D6521. D6084 Test Method for Elastic Recovery of Bituminous
Materials by Ductilometer
NOTE 1—The majority of development work on this test method was
D6373 Specification for Performance Graded Asphalt
performed on material aged in accordance with Test Method D2872
Binder
(RTFO).
D6521 Practice for Accelerated Aging of Asphalt Binder
1.3 The percent recovery is intended to provide a means to
Using a Pressurized Aging Vessel (PAV)
determine the presence of elastic response and stress depen-
D7175 Test Method for Determining the Rheological Prop-
dence of polymer modified and unmodified asphalt binders.
erties of Asphalt Binder Using a Dynamic Shear Rheom-
1.4 A precision and bias statement for this standard has not
eter
beendevelopedatthistime.Therefore,thisstandardshouldnot
4
2.2 AASHTO Standards:
be used for acceptance or rejection of a material for purchasing
M 320 Specification for Performance-Graded Asphalt
purposes.
Binder
1.5 The values stated in SI units are to be regarded as
TP 70 Test Method for Multiple Stress Creep and Recovery
standard. No other units of measurement are included in this
(MSCR) of Asphalt Binder Using a Dynamic Shear
standard.
Rheometer
1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions—Fordefinitionsofgeneraltermsusedinthis
priate safety and health practices and determine the applica-
standard, refer to Terminology D8.
bility of regulatory limitations prior to use.
3.1.1 creep and recovery, n—a standard rheological test
protocolwherebyaspecimenissubjectedtoaconstantloadfor
a fixed time period then allowed to recover at zero load for a
fixed time period.
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 Jan. 1, 2010. Published February 2010. Originally Standards volume information, refer to the standard’s Document Summary page on
approved in 2008. Last previous edition approved in 2008 as D7405 – 08a. DOI: the ASTM website.
4
10.1520/D7405-10. 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.
1

---------------------- Page: 1 ----------------------
D7405–10
3.1.2 non-recoverable creep compliance (J ), n—the re- such that, in addition to other data points, data points at 1.00 s
nr
sidual strain in a specimen after a creep and recovery cycle and 10.00 s for each cycle’s local time are explicitly recorded.
divided by the stress applied in kPa.
8.2.1 If the DSR does not record the strain at exactly 1.00
and 10.00 seconds then the DSR software shall extrapolate
4. Summary of Test Method
prior data to determine the strain value at the required time.
Extrapolation data shall include a measured data point no more
4.1
...

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