ASTM D8239-23

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: D8239 − 21a D8239 − 23
Standard Specification for
Performance-Graded Asphalt Binder Using the Multiple
Stress Creep and Recovery (MSCR) Test
This standard is issued under the fixed designation D8239; 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 specification covers asphalt binders graded by performance. Grading designations are related to the LTPPBind Online
calculated maximum pavement design temperature, the minimum pavement design temperature, and the traffic loading.
NOTE 1—For more information on LTPPBind online,Online, see https://infopave.fhwa.dot.gov/Tools/LTPPBindOnline accessed May 23, 2023June 10,
2020.
1.2 This specification incorporates Test Method D7405 for determining non-recoverable creep compliance, J . “S,” “H,” “V,” or
nr
“E” designations must be specified for standard, heavy, very heavy, and extremely heavy traffic loading, respectively.
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 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.
NOTE 2—A guidance document for specifying bodies using R % for elastic properties is under development.
NOTE 3—For asphalt binders graded by penetration at 25 °C, see Specification D946/D946M. For asphalt binders graded by viscosity at 60 °C, see
Specification D3381/D3381M. For performance-graded asphalt binder, see Specification D6373.
NOTE 4—AASHTO R 29 provides non-mandatory information for determining the performance grade of an asphalt binder.
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
2.1 ASTM Standards:
D8 Terminology Relating to Materials for Roads and Pavements
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
This specification is under the jurisdiction of ASTM Committee D04 on Road and Paving Materials and is the direct responsibility of Subcommittee D04.40 on Asphalt
Specifications.
Current edition approved June 15, 2021July 1, 2023. Published July 2021July 2023. Originally approved in 2018. Last previous edition approved in 2021 as
D8239 – 21.D8239 – 21a. DOI: 10.1520/D8239-21A.10.1520/D8239-23.
This specification is based on SHRP Product 1001, AASHTO M 320, and AASHTO M 332.
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
D8239 − 23
D95 Test Method for Water in Petroleum Products and Bituminous Materials by Distillation
D140/D140M Practice for Sampling Asphalt Materials
D946/D946M Specification for Penetration-Graded Asphalt Binder for Use in Pavement Construction
D2042 Test Method for Solubility of Asphalt Materials in Trichloroethylene or Toluene
D2872 Test Method for Effect of Heat and Air on a Moving Film of Asphalt Binder (Rolling Thin-Film Oven Test)
D3381/D3381M Specification for Viscosity-Graded Asphalt Binder for Use in Pavement Construction
D4402/D4402M Test Method for Viscosity Determination of Asphalt at Elevated Temperatures Using a Rotational Viscometer
D6373 Specification for Performance-Graded Asphalt Binder
D6521 Practice for Accelerated Aging of Asphalt Binder Using a Pressurized Aging Vessel (PAV)
D6648 Test Method for Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR)
D6723 Test Method for Determining the Fracture Properties of Asphalt Binder in Direct Tension (DT) (Withdrawn 2021)
D7175 Test Method for Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer
D7405 Test Method for Multiple Stress Creep and Recovery (MSCR) of Asphalt Binder Using a Dynamic Shear Rheometer
D7553 Test Method for Solubility of Asphalt Materials in N-Propyl Bromide
2.2 AASHTO Standards:
R 29 Practice for Grading or Verifying the Performance Grade of an Asphalt Binder
M 332 Specification for Performance-Graded Asphalt Binder Using Multiple Stress Creep Recovery (MSCR) Test
3. Terminology
3.1 Definitions:
3.1.1 Definitions for many terms common to asphalt binder are found in Terminology D8.
4. Ordering Information
4.1 When ordering under this specification, include in the purchase order the performance grade (PG) of asphalt binder required,
including the designation for traffic loading (for example, D8239, PG 64V-22).
NOTE 5—Agencies may elect to specify PG grades not listed in the tables, either outside the table limits or between listed grades, based on specific design
or performance criteria. For these PG grades it is still appropriate to test the original and RTFO DSR at the specified PG high temperature, and BBR at
the specified PG low temperature +10 °C and PAV DSR at (PG high + PG low)/2 + 4) °C; for example, for PG 64-22, (64 + (–22))/2 + 4 = 25.
NOTE 6—The different generations of the LTPPBind program use different algorithms and weather databases for determining the PG high temperature
for a location. The choice of which LTPPBind version to use is up to the specifier.
4.2 Select the environmentally appropriate high and low temperature grades and the appropriate “S,” “H,” “V,” or “E” grade for
the expected traffic level and traffic load rate.
4.2.1 Standard Designation “S” in most typical situations will be for traffic levels fewer than 10 million equivalent single-axle
loads (ESALs) and less than the standard traffic load rate (>70 km/h).
4.2.2 Heavy Designation “H” in most situations will be for traffic levels of 10 to 30 million ESALs or slow-moving traffic (20
to 70 km/h).
4.2.3 Very Heavy Designation “V” in most situations will be for traffic levels of greater than 30 million ESALs or standing traffic
(<20 km/h).
4.2.4 Extremely Heavy Designation “E” in most situations will be for traffic levels of greater than 30 million ESALs and standing
traffic (<20 km/h) such as toll plazas or port facilities.
NOTE 6—“Grade bumping” is accomplished by using the “H,” “V,” or “E” designation and not by increasing the PG high temperature grade.
4.2.5 The specification evaluates J , the change in compliance from the 0.1-kPa0.1 kPa stress level to the 3.2-kPa3.2 kPa stress
nrdiff
level and restricts the change to 0.75 or 75 %. This is equivalent to 75 % of one grade change. In cases where the J value is less
nr
The last approved version of this historical standard is referenced on www.astm.org.
Available from American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Suite 249, Washington, DC 20001,
http://www.transportation.org.
D8239 − 23
than 0.5, this requirement for J is dropped. When the J value is below 0.5, the binder is extremely stiff and, from precision
nrdiff nr
and bias studies, there is likely to be higher variability with J values below 0.5. In these cases, the issue of loss of stiffness due
nr
to shear thinning of the binder at increased stress is minimal and the requirement in not necessary.
5. Materials and Manufacture
5.1 Asphalt binder shall be prepared by the refining of crude petroleum, with or without the addition of modifiers.
5.2 Modifiers may be any materials of suitable manufacture that are used in virgin or recycled condition and that are capable of
being dis
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