ASTM D6723-02

Standard Test Method for Determining the Fracture Properties of Asphalt Binder in Direct Tension (DT) (Withdrawn 2011)

SIGNIFICANCE AND USE
Stress at failure is used in a mechanistic pavement cracking model to compute critical cracking temperature. The procedure to compute critical cracking temperature is described in Practice D 6521. The critical cracking temperature is then used in specifying the low temperature grade of asphalt binder in accordance with Specification D 6373.
The test method is designed to measure the strength of the asphalt binder at the critical cracking temperature. The asphalt binder has limited ability to resist stress without cracking. In the asphalt binder Specification D 6373, failure stress is used to determine the critical cracking temperature.
For evaluating an asphalt binder for conformance to Specification D 6373, the elongation rate of the gage section is 1.0 mm/min and the test temperature is selected from Table number 1 of Specification D 6373 according to the grade of asphalt binder. Other rates of elongation and test temperatures may be used to test asphalt binders.
SCOPE
1.1 This test method covers the determination of the failure strain and failure stress of asphalt binders by means of a direct tension test. It can be used with unaged material or with material aged using Test Method D 2872 (RTFOT), Practice D 6521 (PAV), or AASHTO T240 (RTFOT) and AASHTO PP1 (PAV). The test apparatus is designed for testing within the temperature range from +6 to -36°C.
1.2 This test method is limited to asphalt binders containing particulate material having dimensions less than 250 μm.
1.3 The values stated in SI units are to be regarded as the 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.
WITHDRAWN RATIONALE
Formerly under the jurisdiction of Committee D04 on Road and Paving Materials, this Test Method was withdrawn in 2011 in accordance with section 10.5.3.1 of the Regulations Governing ASTM Technical Committees, which requires that standards shall be updated by the end of the eighth year since the last approval date.

General Information

• Status: Historical
• Publication Date: 09-Jan-2002
• Withdrawal Date: 31-Dec-2010
• ICS: 91.100.50 - Binders. Sealing materials
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.44 - Rheological Tests

Relations

• Replaces: ASTM D6723-01 - Standard Test Method for Determining the Fracture Properties of Asphalt Binder in Direct Tension (DT)
• Effective Date: 10-Jan-2002
• Referred By: ASTM D8239-23 - Standard Specification for Performance-Graded Asphalt Binder Using the Multiple Stress Creep and Recovery (MSCR) Test
• Effective Date: 10-Jan-2002
• Referred By: ASTM D6626-15(2021) - Standard Specification for Performance-Graded Trinidad Lake Modified Asphalt Binder
• Effective Date: 10-Jan-2002
• Referred By: ASTM D7643-22 - Standard Practice for Determining the Continuous Grading Temperatures and Continuous Grades for PG Graded Asphalt Binders
• Effective Date: 10-Jan-2002
• Referred By: ASTM D6373-23 - Standard Specification for Performance-Graded Asphalt Binder
• Effective Date: 10-Jan-2002

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:D6723–02
Standard Test Method for
Determining the Fracture Properties of Asphalt Binder in
1
Direct Tension (DT)
This standard is issued under the fixed designation D6723; 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 E77 Test Method for Inspection and Verification of Ther-
mometers
1.1 This test method covers the determination of the failure
E83 Practice for Verification and Classification of Exten-
strain and failure stress of asphalt binders by means of a direct
someter Systems
tension test. It can be used with unaged material or with
E220 Test Method for Calibration of Thermocouples By
material aged using Test Method D2872 (RTFOT), Practice
Comparison Techniques
D6521(PAV),orAASHTOT 240(RTFOT)andAASHTOPP1
E691 Practice for Conducting an Interlaboratory Study to
(PAV). The test apparatus is designed for testing within the
Determine the Precision of a Test Method
temperature range from +6 to -36°C.
2.2 Deutche Industrie Norm (DIN) Standard:
1.2 This test method is limited to asphalt binders containing
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43760 Standard for Calibrating Thermocouples
particulate material having dimensions less than 250 µm.
2.3 AASHTO Standards:
1.3 The values stated in SI units are to be regarded as the
4
T 240
standard.
4
PPI (PAV)
1.4 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—For definitions of general terms used in
priate safety and health practices and determine the applica-
this standard, refer to Terminology D8.
bility of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents 3.2.1 brittle, adj—type of failure in a direct tension test
2
wherethestress-straincurveisessentiallylinearuptothepoint
2.1 ASTM Standards:
of failure and the failure is by sudden rupture of the test
C670 Practice for Preparing Precision and Bias Statements
specimen without appreciable reduction in cross-section of the
for Test Methods for Construction Materials
specimen.
D8 Terminology Relating to Materials for Roads and Pave-
3.2.2 brittle-ductile, adj—type of failure in a direct tension
ments
test where the stress-strain curve is curvilinear and the failure
D140 Practice for Sampling Bituminous Materials
is by sudden rupture of the test specimen. Limited reduction in
D2872 Test Method for Effect of Heat andAir on a Moving
cross-section of the specimen occurs before rupture.
Film of Asphalt (Rolling Thin-Film Oven Test)
3.2.3 ductile, adj—type of failure in a direct tension test
D6373 Specification for Performance Graded Asphalt
where the specimen does not rupture but fails by flow at large
Binder
strains.
D6521 Practice for Accelerated Aging of Asphalt Binder
3.2.4 effective gage length, n—for specimens used in this
Using a Pressurized Aging Vessel (PAV)
test, the effective gauge length, L , has been determined to be
e
E1 Specification for ASTM Liquid-in-Glass Thermometers
33.8 mm. This is an effective gauge length that represents the
E4 Practices for Force Verification of Testing Machines
portion of the specimen that contributes to the majority of the
strain.
3.2.5 failure, n—point at which the tensile load reaches a
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
maximumvalueasthetestspecimenispulledataconstantrate
and Paving Materials and is the direct responsibility of Subcommittee D04.44 on
of elongation.
Rheological Tests.
Current edition approved Jan. 10, 2002. Published March 2002. Originally
published as D6723 – 01. Last previous edition D6723 – 01. DOI: 10.1520/D6723-
02.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Deutsches Institut fur Normung e.V. (German Standards Institute), Beuth
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Verlag GmbH, Burggrafenstrasse 6, 10787, Berlin Germany.
4
Standards volume information, refer to the standard’s Document Summary page on Available from the American State Highway and Transportation Officials, 444
the ASTM website. N. Capitol Street, N.W., Washington, DC 20001.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6723–02
3.2.6 failure strain, n—the tensile strain corresponding to 6. Apparatus
the failure stress.
6.1 DirectTensionTestSystem—Adirecttensiontestsystem
3.2.7 failure stress, n—the tensile stress on the test speci-
consisting of (1)
...