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ASTM D7552-09

(Test Method)

Standard Test Method for Determining the Complex Shear Modulus (G*) Of Bituminous Mixtures Using Dynamic Shear Rheometer

Standard Test Method for Determining the Complex Shear Modulus (G*) Of Bituminous Mixtures Using Dynamic Shear Rheometer

SIGNIFICANCE AND USE
The complex shear modulus of bituminous mixtures is a fundamental property of the material. Test results at critical temperatures (Tcritical) are used for specifications for some mixes. Mixtures with stiffer binders, aged mixtures, mixtures with higher amounts of fines (material finer than 75µ), and mixtures with lower voids all tend to have higher complex shear modulus values than mixtures with less stiff binders, unaged mixes, mixtures with low levels of fines and higher air voids. In general, mixtures with higher complex shear modulus values at a given service temperature will exhibit lower permanent deformation values than similar mixtures tested at the same temperature that have lower complex shear modulus values.
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 Standard Practice D 3666 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with D 3666 alone does not completely assure reliable results. Reliable results depend on many factors; following the suggestions of D 3666 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 the complex shear modulus of bituminous mixtures using torsion rectangular geometry on a dynamic shear rheometer (DSR). It is applicable to bituminous mixtures having complex shear modulus values greater than 1 × 104 Pa when tested over a range of temperatures from 10°C to 76°C at frequencies of 0.01 to 25 Hz and strains of 0.001 % to 0.1 %. The determination of complex shear modulus is typically determined at 20°C to 70°C at 0.01% strain at 10 discrete frequency values covering 0.01 to 10 Hz. From these data, temperature or frequency master curves can be generated as required. This test method is intended for determining the complex shear modulus of bituminous mixtures as required for specification testing or quality control of bituminous mixture production.
1.2 This test method is appropriate for laboratory prepared and compacted mixtures, field produced and laboratory compacted mixtures or field cores, regardless of binder type or grade and regardless of whether RAP is used in the mixture. Due to the geometry of the specimens being tested this test method is not applicable to open-graded or SMA mixtures. It has been found to be appropriate for dense-graded mixtures, whether coarse- or fine-graded, with 19 mm or smaller nominal maximum aggregate size.
1.3 The between-laboratory reproducibility of this test method is being determined and will be available on or before June 2012. Therefore, this test method should not be used for acceptance or rejection of materials for purchasing purposes.
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 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-Jun-2009
ICS
75.140 - Waxes, bituminous materials and other petroleum products
91.100.50 - Binders. Sealing materials
Technical Committee
D04 - Road and Paving Materials
Drafting Committee
D04.26 - Fundamental/Mechanistic Tests
Current Stage
Ref Project

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ASTM D7552-09 - Standard Test Method for Determining the Complex Shear Modulus (G*) Of Bituminous Mixtures Using Dynamic Shear RheometerASTM D7552-09 - Standard Test Method for Determining the Complex Shear Modulus (G*) Of Bituminous Mixtures Using Dynamic Shear Rheometer
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ASTM D7552-09 - Standard Test Method for Determining the Complex Shear Modulus (G*) Of Bituminous Mixtures Using Dynamic Shear Rheometer
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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: D7552 − 09
StandardTest Method for
Determining the Complex Shear Modulus (G*) Of
1
Bituminous Mixtures Using Dynamic Shear Rheometer
This standard is issued under the fixed designation D7552; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber 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
2
1.1 This test method covers the determination of the com-
2.1 ASTM Standards:
plex shear modulus of bituminous mixtures using torsion
C670Practice for Preparing Precision and Bias Statements
rectangular geometry on a dynamic shear rheometer (DSR). It
for Test Methods for Construction Materials
is applicable to bituminous mixtures having complex shear
D140Practice for Sampling Bituminous Materials
4
modulus values greater than1×10 Pa when tested over a
D2041Test Method for Theoretical Maximum Specific
rangeoftemperaturesfrom10°Cto76°Catfrequenciesof0.01
Gravity and Density of Bituminous Paving Mixtures
to25Hzandstrainsof0.001%to0.1%.Thedeterminationof
D2726Test Method for Bulk Specific Gravity and Density
complex shear modulus is typically determined at 20°C to
of Non-Absorptive Compacted Bituminous Mixtures
70°C at 0.01% strain at 10 discrete frequency values covering
D3203Test Method for Percent Air Voids in Compacted
0.01 to 10 Hz. From these data, temperature or frequency
Dense and Open Bituminous Paving Mixtures
mastercurvescanbegeneratedasrequired.Thistestmethodis
D3666Specification for Minimum Requirements for Agen-
intended for determining the complex shear modulus of bitu-
cies Testing and Inspecting Road and Paving Materials
minous mixtures as required for specification testing or quality
D6752Test Method for Bulk Specific Gravity and Density
control of bituminous mixture production.
of Compacted Bituminous Mixtures Using Automatic
1.2 This test method is appropriate for laboratory prepared
Vacuum Sealing Method
and compacted mixtures, field produced and laboratory com-
D6857Test Method for Maximum Specific Gravity and
pacted mixtures or field cores, regardless of binder type or
Density of Bituminous Paving Mixtures UsingAutomatic
grade and regardless of whether RAP is used in the mixture.
Vacuum Sealing Method
Due to the geometry of the specimens being tested this test
D6925Test Method for Preparation and Determination of
method is not applicable to open-graded or SMA mixtures. It
the Relative Density of Hot Mix Asphalt (HMA) Speci-
has been found to be appropriate for dense-graded mixtures,
mens by Means of the Superpave Gyratory Compactor
whethercoarse-orfine-graded,with19mmorsmallernominal
D6926Practice for Preparation of Bituminous Specimens
maximum aggregate size.
Using Marshall Apparatus
1.3 The between-laboratory reproducibility of this test D7175Test Method for Determining the Rheological Prop-
method is being determined and will be available on or before erties of Asphalt Binder Using a Dynamic Shear Rheom-
June 2012. Therefore, this test method should not be used for eter
acceptance or rejection of materials for purchasing purposes. D7312Test Method for Determining the Permanent Shear
Strain and Complex Shear Modulus of Asphalt Mixtures
1.4 The values stated in SI units are to be regarded as
Using the Superpave Shear Tester (SST)
standard. No other units of measurement are included in this
E77Test Method for Inspection and Verification of Ther-
standard.
mometers
1.5 This standard does not purport to address all of the
E563Practice for Preparation and Use of an Ice-Point Bath
safety concerns, if any, associated with its use. It is the
as a Reference Temperature
responsibility of the user of this standard to establish appro-
E644Test Methods for Testing Industrial Resistance Ther-
priate safety and health practices and determine the applica-
mometers
bility of regulatory limitations prior to use.
1
This test method is under the jurisdiction of ASTM Committee D04 on Road
2
and Paving Materials and is the direct responsibility of Subcommittee D04.26 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Fundamental/Mechanistic Tests. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2009. Published August 2009. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D7552-09. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7552 − 09
2.2 Other Standards: measurement system, or material measure are stable. Usually
DIN Standard 43760Standard for Calibration
...

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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 the complex shear modulus of asphalt mixtures using torsion rectangular geometry on a dynamic shear rheometer (DSR). It is applicable to asphalt mixtures having complex shear modulus values greater than 1 × 104 Pa when tested over a range of temperatures from –40 °C to 76 °C at frequencies of 0.01 to 25 Hz and strains of 0.0005 % to 0.1 %. The determination of complex shear modulus is typically determined at 20 °C to 70 °C at 0.01 % strain at ten discrete frequency values covering 0.01 to 10 Hz. From these data, temperature or frequency master curves can be generated as required. This test method is intended for determining the complex shear modulus of asphalt mixtures as required for specification testing or quality control of asphalt mixture production.  
1.2 This test method is appropriate for laboratory-prepared and compacted mixtures, field-produced and laboratory-compacted mixtures or field cores, regardless of binder type or grade and regardless of whether RAP is used in the mixture. Due to the geometry of the specimens being tested this test method is not applicable to open-graded or SMA mixtures. It has been found to be appropriate for dense-graded mixtures, whether coarse- or fine-graded, with 19 mm or smaller nominal maximum aggregate size.  
1.3 Since a precision estimate for this standard has not been developed, the test method is to be used for research and informational purposes only. Therefore, this standard should not be used for acceptance or rejection of a material for purchasing purposes.  
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...

  • Standard
    9 pages
    English language
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  • Standard
    9 pages
    English language
    sale 15% off