ASTM D7226-13(2017)

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

SIGNIFICANCE AND USE
5.1 The viscosity of emulsified asphalts characterizes their flow properties and affects their utility at 50 °C or at other temperatures. The sprayability and workability of an emulsified asphalt are directly related to its viscosity for many applications. The material must be thin enough to be sprayed yet thick enough such that it will not flow from the crown or grade of the road. For mixing-grade emulsified asphalts, the viscosity will affect its workability and resulting film thickness on the aggregate. This test method is useful to measure the apparent viscosity of emulsified asphalt at a temperature of 50 °C, 25 °C, or another agreed-upon temperature. The preset temperature and rotational speed at 100 r/min allow for an automated and consistent determination of an emulsified asphalt viscosity within a short time.
SCOPE
1.1 This test method utilizes the rotational paddle viscometer to measure the viscosity of emulsified asphalt. It is applicable to all the emulsified asphalts described in Specifications D977 and D2397.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2017
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.42 - Emulsified Asphalt Test

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7226 − 13 (Reapproved 2017)
Standard Test Method for
Determining the Viscosity of Emulsified Asphalts Using a
1
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.
1. Scope 3.1.1.1 Discussion—The SI unit of viscosity is the Pascal
3
second (Pa·s).
1.1 This test method utilizes the rotational paddle viscom-
eter to measure the viscosity of emulsified asphalt. It is
4. Summary of Test Method
applicable to all the emulsified asphalts described in Specifi-
4.1 The rotational paddle viscometer method is used to
cations D977 and D2397.
measure the apparent viscosity of emulsified asphalt at 50 °C,
1.2 The values stated in SI units are to be regarded as
25 °C, or other agreed-upon temperatures. A microprocessor
standard. No other units of measurement are included in this
circuitry system functioning in tandem with a temperature
standard.
probe and equipped with internal electronic sensors detects and
1.3 This standard does not purport to address all of the analyzes the preset temperature. A paddle is immersed in the
emulsified asphalt sample and is rotated at 100 r/min. The
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- apparent viscosity of the sample is obtained and read from the
electronic display or an optional printer.
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
5. Significance and Use
1.4 This international standard was developed in accor-
5.1 The viscosity of emulsified asphalts characterizes their
dance with internationally recognized principles on standard-
flow properties and affects their utility at 50 °C or at other
ization established in the Decision on Principles for the
temperatures. The sprayability and workability of an emulsi-
Development of International Standards, Guides and Recom-
fied asphalt are directly related to its viscosity for many
mendations issued by the World Trade Organization Technical
applications. The material must be thin enough to be sprayed
Barriers to Trade (TBT) Committee.
yet thick enough such that it will not flow from the crown or
grade of the road. For mixing-grade emulsified asphalts, the
2. Referenced Documents
viscosity will affect its workability and resulting film thickness
2
2.1 ASTM Standards:
on the aggregate. This test method is useful to measure the
D140 Practice for Sampling Bituminous Materials
apparent viscosity of emulsified asphalt at a temperature of
D977 Specification for Emulsified Asphalt
50 °C, 25 °C, or another agreed-upon temperature. The preset
D2397 Specification for Cationic Emulsified Asphalt
temperature and rotational speed at 100 r/min allow for an
E11 Specification for Woven Wire Test Sieve Cloth and Test
automated and consistent determination of an emulsified as-
Sieves
phalt viscosity within a short time.
3. Terminology
6. Apparatus
3.1 Definitions:
6.1 The rotational paddle viscometer test system consists of
3.1.1 viscosity, n—ratio of shear stress to shear rate.
a paddle, temperature probe, sample cup, the sample cup cover,
a means of controlling the sample temperature to within
60.1 °C, and a readout system to display viscosity. The
1
dimensions of the sample cup and paddle are shown in Figs.
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
1-3.
Emulsified Asphalt Test.
6.2 Thermometer—Any thermometric device can be used to
Current edition approved Oct. 1, 2017. Published October 2017. Originally
approved in 2006. Last previous edition approved in 2013 as D7226 – 13. DOI:
monitor the temperature of the sample being conditioned for
10.1520/D7226-13R17.
testing.
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
3 2
Standards volume information, refer to the standard’s Document Summary page on The centimetre gram second (cgs) unit of viscosity is the poise (dynes/cm ) and
the ASTM website. is equivalent to 0.1 Pa·s. One centipoise (cP) is one millipascal second (mPa·s).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D7226 − 13 (2017)
FIG. 1 Paddle Dimensions
FIG. 2 Sample Cup Dimensions
2

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D7226 −
...

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: D7226 − 13 D7226 − 13 (Reapproved 2017)
Standard Test Method for
Determining the Viscosity of Emulsified Asphalts Using a
1
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.
1. Scope
1.1 This test method utilizes the rotational paddle viscometer to measure the viscosity of emulsified asphalt. It is applicable to
all the emulsified asphalts described in Specifications D977 and D2397.
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D140 Practice for Sampling Bituminous Materials
D977 Specification for Emulsified Asphalt
D2397 Specification for Cationic Emulsified Asphalt
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
3. Terminology
3.1 Definitions:
3.1.1 viscosity, n—ratio of shear stress to shear rate.
1
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.
Current edition approved Dec. 1, 2013Oct. 1, 2017. Published January 2014October 2017. Originally approved in 2006. Last previous edition approved in 20112013 as
D7226 – 11.D7226 – 13. DOI: 10.1520/D7226-13.10.1520/D7226-13R17.
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.
3.1.1.1 Discussion—
3
The SI unit of viscosity is the Pascal second (Pa·s).
4. Summary of Test Method
4.1 The rotational paddle viscometer method is used to measure the apparent viscosity of emulsified asphalt at 50°C,
25°C,50 °C, 25 °C, or other agreed-upon temperatures. A microprocessor circuitry system functioning in tandem with a
temperature probe and equipped with internal electronic sensors detects and analyzes the preset temperature. A paddle is immersed
in the emulsified asphalt sample and is rotated at 100 RPM.r/min. The apparent viscosity of the sample is obtained and read from
the electronic display or an optional printer.
3 2
The centimetre gram second (cgs) unit of viscosity is the poise (dynes/cm ) and is equivalent to 0.1 Pa·s. One centipoise (cP) is one millipascal second (mPa·s).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7226 − 13 (2017)
5. Significance and Use
5.1 The viscosity of emulsified asphalts characterizes their flow properties and affects their utility at 50°C50 °C or at other
temperatures. The sprayability and workability of an emulsified asphalt are directly related to its viscosity for many applications.
The material must be thin enough to be sprayed yet thick enough such that it will not flow from the crown or grade of the road.
For mixing grade mixing-grade emulsified asphalts, the viscosity will affect its workability and resulting film thickness on the
aggregate. This test method is useful to measure the apparent viscosity of emulsified asphalt at a temperature of 50°C, 25°C,50 °C,
25 °C, or another agreed-upon temperature. The preset temperature and rotational speed at 100 RPMr/min allow for an automated
and consistent determination of an emulsified asphalt viscosity within a short time.
6. Apparatus
6.1 The rotational paddle viscometer test system consists of a paddle, temperature probe, sample cup, the sample cup cover, a
means of controlling the sample temperature to within
...