ASTM D7226-06e1

Standard Test Method for Determining the Viscosity of Emulsified Asphalts Using a Rotational Paddle Viscometer

SIGNIFICANCE AND USE
This test method is useful to measure the apparent viscosity of emulsified asphalt at a temperature of 50°C (122°F) or another agreed-upon temperature. The preset temperature and rotational speed at 100 RPM allow for an automated determination of an emulsified asphalt apparent viscosity within 5 min.
SCOPE
1.1 This test method uses a paddle rotational viscometer to measure the apparent viscosity of emulsified asphalt with viscosities between 30 and 1500 mPa·s (centipoises) at 50°C (122°F). It is applicable to all emulsified asphalt described in Specifications D977 and D2397.
1.2 The values given in SI units are to be considered the standard. The values given in parentheses are for information only.
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: 31-Dec-2005
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.42 - Emulsified Asphalt Test

Relations

• Replaces: ASTM D7226-06 - Standard Test Method for Determining the Viscosity of Emulsified Asphalts Using a Rotational Paddle Viscometer
• Effective Date: 01-Jan-2006
• Replaced By: ASTM D7226-10 - Standard Test Method for Determining the Viscosity of Emulsified Asphalts Using a Rotational Paddle Viscometer
• Effective Date: 01-Dec-2010
• Referred By: ASTM D2397/D2397M-20 - Standard Specification for Cationic Emulsified Asphalt
• Effective Date: 01-Jan-2006
• Referred By: ASTM D977-20 - Standard Specification for Emulsified Asphalt
• Effective Date: 01-Jan-2006

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
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Designation: D7226 – 06
Standard Test Method for
Determining the Viscosity of Emulsified Asphalts Using a
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Rotational Paddle Viscometer
This standard is issued under the fixed designation D7226; 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.
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´ NOTE—Added research report information to Section 9 editorially in September 2010.
1. Scope 3.1.1.1 Discussion—The SI unit of viscosity is the Pascal
second (Pa·s). The centimetre gram second (cgs) unit of
1.1 This test method uses a paddle rotational viscometer to
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viscosity is the poise (dynes/cm ) and is equivalent to 0.1 Pa·s.
measure the apparent viscosity of emulsified asphalt with
One centipoise (cP) is one millipascal second (mPa·s).
viscosities between 30 and 1500 mPa·s (centipoises) at 50°C
(122°F). It is applicable to all emulsified asphalt described in
4. Summary of Test Method
Specifications D977 and D2397.
4.1 The paddle rotational viscometer for this test method is
1.2 The values given in SI units are to be considered the
used to measure the apparent viscosity of emulsified asphalt at
standard. The values given in parentheses are for information
50°C (122°F) between 30 and 1500 mPa·s (cP). A micropro-
only.
cessor circuitry system functioning in tandem with a tempera-
1.3 This standard does not purport to address all of the
tureprobeandequippedwithinternalelectronicsensorsdetects
safety concerns, if any, associated with its use. It is the
and analyzes the preset temperature. A paddle is immersed in
responsibility of the user of this standard to establish appro-
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the emulsified asphalt sample and is rotated at 100 RPM. The
priate safety and health practices and determine the applica-
apparent viscosity of the sample is obtained within 5 min and
bility of regulatory limitations prior to use.
read from the electronic display or optional printer.
2. Referenced Documents
5. Significance and Use
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2.1 ASTM Standards:
5.1 This test method is useful to measure the apparent
C670 Practice for Preparing Precision and Bias Statements
viscosity of emulsified asphalt at a temperature of 50°C
for Test Methods for Construction Materials
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(122°F) or another agreed-upon temperature. The preset
D140 Practice for Sampling Bituminous Materials
temperature and rotational speed at 100 RPM allow for an
D244 Test Methods and Practices for Emulsified Asphalts
automated determination of an emulsified asphalt apparent
D977 Specification for Emulsified Asphalt
viscosity within 5 min.
D2397 Specification for Cationic Emulsified Asphalt
E1 Specification for ASTM Liquid-in-Glass Thermometers
6. Apparatus
E11 SpecificationforWovenWireTestSieveClothandTest
6.1 The paddle viscometer test system consists of a paddle,
Sieves
temperature probe, sample cup, the sample cup cover, a means
for controlling the sample temperature to 50 6 0.1°C (122 6
3. Terminology
0.18°F), and readout system to display viscosity. The dimen-
3.1 Definition:
sions of the sample cup and paddle are shown in Figs. 1-3.
3.1.1 viscosity, n—ratio of shear stress to shear rate.
6.2 Thermometer—ASTM No. 19F or 19C for tests at 50°C
conforming to the requirements of Specification E1.
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This test method is under the jurisdiction of ASTM Committee D04 on Road
and Paving Materials and is the direct responsibility of Subcommittee D04.42 on
Emulsified Asphalt Test.
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Current edition approved Jan. 1, 2006. Published January 2006. DOI: 10.1520/ Emulsions are sensitive to RPM, therefore, the manufacturer has preset the
D7226-06E01. instrument to run at 100 RPM.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or No accurate predictable conversion from mPa seconds to Saybolt Furol
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Seconds (SFS) is available at this time. However, an empirical correlation between
Standards volume information, refer to the standard’s Document Summary page on SFS and mPa seconds can be obtained by performing the respective viscosity
the ASTM website. measurements on the appropriate equipment.
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D7226 – 06
FIG. 1 Paddle Dimensions, mm (in.)
FIG. 2 Sample Cup Dimensions, mm (in.)
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D7226 – 06
FIG. 3 Paddle and Sample Cup, mm (in.)
6.3 Sieve—An 850-µm sieve or a 20-mesh strainer of wire 7.5 Pull the heater block forward and clear of the paddle.
cloth, framed or unframed, conforming to Specification E11 is Place the filled sa
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