ASTM D2493/D2493M-16

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.
Designation: D2493/D2493M − 16
Standard Practice for
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Viscosity-Temperature Chart for Asphalt Binders
This standard is issued under the fixed designation D2493/D2493M; 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 at Elevated Temperatures Using a Rotational Viscometer
D4957TestMethodforApparentViscosityofAsphaltEmul-
1.1 The viscosity-temperature chart covered by this stan-
sion Residues and Non-Newtonian Bitumens by Vacuum
dard is a convenient means of plotting data for estimating the
Capillary Viscometer
viscosityofasphaltbindersatanytemperaturewithinalimited
D7175Test Method for Determining the Rheological Prop-
range. Conversely, the chart may be used to ascertain the
erties of Asphalt Binder Using a Dynamic Shear Rheom-
temperature at which a desired viscosity is attained.
eter
1.2 The chart is suitable for asphalt binders and for asphalts
recovered from laboratory aging tests or extracted from pave-
3. Significance and Use
ments.
3.1 The viscosity-temperature chart is a convenient means
1.3 The chart is based on a viscosity-temperature relation-
of plotting the viscosity data for estimating the viscosity of
ship that can be plotted using any appropriate set of units. For
asphaltbinders,recoveredasphalts,androofingasphaltsatany
convenience, charts based on both conventional and SI units
temperature within a limited range. It is also a convenient
are provided.
means to estimate the temperature at which a desired viscosity
1.4 The range of the chart is sufficient for roofing asphalts. is attained. Charts may be constructed manually or using
computer graphing software.
1.5 The range of the chart is sufficient for asphalt binders
whose viscosity exceeds 0.01Pa.S (10 centipoise).
3.2 Kinematic viscosity-temperature charts are described in
Practice D341.
1.6 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in
4. Description
each system may not be exact equivalents; therefore, each
system shall be used independently of the other. Combining
4.1 Fig. 1 shows an example viscosity-temperature chart.
values from the two systems may result in nonconformance
For Fig. 1, the chart coordinates are logarithm of the logarithm
with the standard.
of the viscosity in centipoise as the ordinate, and logarithm of
the absolute temperature in degrees Rankine (degrees F +
2. Referenced Documents
459.7) as the abscissa. However, the viscosity in poise and the
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temperature in degrees Fahrenheit are shown in the chart for
2.1 ASTM Standards:
convenience.
D341Practice for Viscosity-Temperature Charts for Liquid
Petroleum Products
4.2 Fig. 2 shows an example viscosity-temperature chart.
D2170Test Method for Kinematic Viscosity of Asphalts
For Fig. 2, the chart coordinates are logarithm of the logarithm
(Bitumens)
of the viscosity in mPa·S as the ordinate, and logarithm of the
D2171Test Method for Viscosity of Asphalts by Vacuum
absolute temperature in degrees Kelvin (degrees C + 273.2) as
Capillary Viscometer
theabscissa.However,viscosityinPa·Sandthetemperaturein
D4402Test Method for Viscosity Determination of Asphalt
degrees Celsius are shown in the chart for convenience.
4.3 The temperature range of the charts may be extended or
abbreviated as necessary.
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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.
5. Procedure
Current edition approved Dec. 1, 2016. Published January 2017. Originally
5.1 If the viscosities are not known they should be deter-
approved in 1966. Last previous edition approved in 2009 as D2493/D2493M–09.
DOI: 10.1520/D2493_D2493M-16.
mined in accordance with Test Methods D2170, D2171,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
D4402, D4957,or D7175. Viscosities determined at tempera-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tures other than the temperatures specified in each of these test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. methods may be used.
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D2493/D2493M − 16
FIG. 1 Viscosity-Temperature Chart for Asphalt Binders on Which a Typical Experimental Curve Has B
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