ASTM D7643-16

Standard Practice for Determining the Continuous Grading Temperatures and Continuous Grades for PG Graded Asphalt Binders

SIGNIFICANCE AND USE
5.1 The continuous grading temperatures and continuous grade are used for informational purposes only and shall not be used for the sale or purchase of asphalt binders. The continuous grading temperatures and continuous grade may be used for forensic or research studies and when producing, blending, modifying, or otherwise evaluating asphalt binders. This guide is applicable to Specification D6373, Tables 1 and 2.
SCOPE
1.1 This practice is used to estimate the continuous grading temperatures and continuous grade for an asphalt binder graded in accordance with the requirements specified in Specification D6373.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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: 30-Nov-2016
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.44 - Rheological Tests

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7643 − 16
Standard Practice for
Determining the Continuous Grading Temperatures and
1
Continuous Grades for PG Graded Asphalt Binders
This standard is issued under the fixed designation D7643; 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 erties of Asphalt Binder Using a Dynamic Shear Rheom-
eter
1.1 This practice is used to estimate the continuous grading
temperaturesandcontinuousgradeforanasphaltbindergraded
3. Terminology
in accordance with the requirements specified in Specification
D6373.
3.1 Definitions: Definitions for many terms common to
asphalt cement and asphalt binder are found in Terminology
1.2 The values stated in SI units are to be regarded as
D8.
standard. No other units of measurement are included in this
standard.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 continuous grade, n—a grade defined by the estimated
1.3 This standard does not purport to address all of the
upper and lower continuous grading temperatures.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.2.2 continuousgradingtemperatures,T,n—theestimated
c
priate safety and health practices and determine the applica-
temperatures at which the properties of an asphalt binder are
bility of regulatory limitations prior to use.
equaltothespecificationrequirementsgiveninTables1or2of
Specification D6373.
2. Referenced Documents
3.2.3 difference between estimated continuous grading tem-
2
2.1 ASTM Standards:
perature for S and the m-value, ∆T —determined by subtract-
C
D8 Terminology Relating to Materials for Roads and Pave-
ing the continuous grading temperature for the m-value from
ments
the continuous grading temperature for S.
D2872 Test Method for Effect of Heat and Air on a Moving
3.2.4 PG grading temperatures, T ,n—the temperatures
PG
Film of Asphalt (Rolling Thin-Film Oven Test)
listed in Specification D6373 used to designate the grade of a
D6373 Specification for Performance Graded Asphalt
PG binder, for example, 64 °C, 22 °C, and –28 °C for a PG
Binder
64-28.
D6521 Practice for Accelerated Aging of Asphalt Binder
3.2.5 specification requirements, n—the limiting values
Using a Pressurized Aging Vessel (PAV)
D6648 Test Method for Determining the Flexural Creep given in Specification D6373 that are used to grade an asphalt
binder, for example, 1.00 kPa for G*/sinδ, 300 MPa for S, etc.
Stiffness of Asphalt Binder Using the Bending Beam
Rheometer (BBR)
3.2.6 test temperatures, T and T,n—two PG grading
1 2
D6723 Test Method for Determining the Fracture Properties
temperatures, one grade apart such that the measured proper-
of Asphalt Binder in Direct Tension (DT)
ties at the two temperatures bracket the specification require-
D6816 Practice for Determining Low-Temperature Perfor-
ment for the property in question.
mance Grade (PG) of Asphalt Binders
D7175 Test Method for Determining the Rheological Prop-
4. Summary of Practice
4.1 The continuous grading temperature for each specifica-
1
This practice is under the jurisdiction of ASTM Committee D04 on Road and
tion requirement is determined by interpolating between test
Paving Materials and is the direct responsibility of Subcommittee D04.44 on
resultsobtainedattwoadjacentspecificationtemperatures.The
Rheological Tests.
two temperatures are chosen so that the test result at one
Current edition approved Dec. 1, 2016. Published January 2017. Originally
temperature is greater than the specification requirement and
approved in 2010. Last previous edition approved in 2010 as D7643 – 10. DOI:
10.1520/D7643-16.
the test result at the other temperature is less than the
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specification requirement. The upper continuous grade is
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
determined as the lower of the two continuous grading tem-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. peratures determined for the original and RTFOT condition
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7643 − 16
(Test Methods D2872 and D7175). The intermediate continu-
P,P = test result for the specification property in question
1 2
ous grade is equal to the intermediate continuous grading
at T and T , respectively.
1 2
temperature (Practice D6521, Test Method D7175). The lower
6.2.2 For the lower continuous grading temperature the
conti
...

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: D7643 − 10 D7643 − 16
Standard Practice for
Determining the Continuous Grading Temperatures and
1
Continuous Grades for PG Graded Asphalt Binders
This standard is issued under the fixed designation D7643; 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 practice is used to determineestimate the continuous grading temperatures and continuous grade for an asphalt binder
graded in accordance with the specification criteria requirements specified in D6373,Specification D6373Standard Specification for
Performance Graded Asphalt Binders.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
2. Referenced Documents
2
2.1 ASTM Standards:
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)
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)
D6816 Practice for Determining Low-Temperature Performance Grade (PG) of Asphalt Binders
D7175 Test Method for Determining the Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer
3. Terminology
3.1 Definitions: Definitions for many terms common to asphalt cement and asphalt binder are found in Terminology D8.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 continuous grade, n—a grade defined by the estimated upper and lower continuous grading temperatures.
3.2.2 continuous grading temperatures, T , n—the high, intermediate, and low estimated temperatures at which the properties
c
of an asphalt binder are equal to the specification requirements given in Tables 1 or 2 of Specification D6373 are met.
3.2.3 continuous grade,difference between estimated continuous grading n—temperature for S and the m-value, ΔT —a grade
C
defined by upper and lower continuous grading temperatures. determined by subtracting the continuous grading temperature for
the m-value from the continuous grading temperature for S.
3.2.4 PG grading temperatures, T , n—the temperatures listed in Specification D6373 used to designate the grade of a PG
PG
binder, for example, 64ºC, 22ºC64 °C, 22 °C, and -28ºC–28 °C for a PG 64-28.
3.2.5 specification requirements, n—the limiting values given in Specification D6373 that are used to grade an asphalt binder,
for example, 1.00 kPa for G*/sinδ, 300 MPa for S, etc.
1
This practice 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 June 1, 2010Dec. 1, 2016. Published March 2011January 2017. Originally approved in 2010. Last previous edition approved in 2010 as
D7643 – 10. DOI: 10.1520/D7643–10.10.1520/D7643-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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 ----------------------
D7643 − 16
3.2.6 test temperatures, T and T , n—two PG grading temperatures, one grade apart and with T > T such that the testmeasured
1 2 2 1
properties at the two temperatures bracket the specification requirement for the property in question.
3.2.5 specification requirements, n—the limiting values given in Specification D6373 that are used to grade an asphalt binder,
for example, 1.00 kPa for G*/sinδ, 300 MPa for S(60), etc.
4. Summary of Practice
4.1 The temperatures required to determine the continuous grading temperature
...