ASTM D7496-18
(Test Method)Standard Test Method for Viscosity of Emulsified Asphalt by Saybolt Furol Viscometer
Standard Test Method for Viscosity of Emulsified Asphalt by Saybolt Furol Viscometer
SIGNIFICANCE AND USE
3.1 Viscosity has significance in the use of emulsified asphalts because it is a property which affects their utility. When used in application types of construction, the material must be thin enough to be uniformly applied through the spray bar of distributor, yet thick enough so that it will not flow from the crown or grade of the road. For mixing-grade emulsions, the viscosity may affect mixability and resulting thickness of film on the aggregate. The viscosity of many emulsified asphalts is affected by shear. Therefore, strict adherence to test procedure is necessary to achieve precision.
SCOPE
1.1 This test method utilizes the Saybolt Furol viscometer to measure the consistency of emulsified asphalt. It is applicable to all the emulsified asphalts specified in Specifications D977 and D2397/D2397M.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in noncompliance with the standard.
1.3 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.
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 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.
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Standards Content (Sample)
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:D7496 −18
Standard Test Method for
Viscosity of Emulsified Asphalt by Saybolt Furol
1
Viscometer
This standard is issued under the fixed designation D7496; 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 D2397/D2397M Specification for Cationic Emulsified As-
phalt
1.1 ThistestmethodutilizestheSayboltFurolviscometerto
E1 Specification for ASTM Liquid-in-Glass Thermometers
measure the consistency of emulsified asphalt. It is applicable
E11 Specification for Woven Wire Test Sieve Cloth and Test
to all the emulsified asphalts specified in Specifications D977
Sieves
and D2397/D2397M.
E1137/E1137M Specification for Industrial Platinum Resis-
1.2 The values stated in either SI units or inch-pound units
tance Thermometers
are to be regarded separately as standard. The values stated in
each system may not be exact equivalents; therefore, each
3. Significance and Use
system shall be used independently of the other. Combining
3.1 Viscosity has significance in the use of emulsified
values from the two systems may result in noncompliance with
asphalts because it is a property which affects their utility.
the standard.
When used in application types of construction, the material
1.3 The text of this standard references notes and footnotes
must be thin enough to be uniformly applied through the spray
which provide explanatory material. These notes and footnotes
bar of distributor, yet thick enough so that it will not flow from
(excluding those in tables and figures) shall not be considered
the crown or grade of the road. For mixing-grade emulsions,
as requirements of the standard.
the viscosity may affect mixability and resulting thickness of
film on the aggregate. The viscosity of many emulsified
1.4 This standard does not purport to address all of the
asphalts is affected by shear. Therefore, strict adherence to test
safety concerns, if any, associated with its use. It is the
procedure is necessary to achieve precision.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Sample Conditioning for Testing
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
4.1 All emulsified asphalts shall be properly stirred to
dance with internationally recognized principles on standard-
achieve homogeneity before testing.
ization established in the Decision on Principles for the
4.2 All emulsified asphalts with the viscosity testing re-
Development of International Standards, Guides and Recom-
quirementsof50 °C[122 °F]shallbeheatedto50 63 °C[122
mendations issued by the World Trade Organization Technical
6 5 °F] in the original sample container in a water bath or
Barriers to Trade (TBT) Committee.
oven. The container should be vented to relieve pressure.After
the sample reaches 50 6 3 °C [122 6 5 °F], stir the sample to
2. Referenced Documents
achieve homogeneity.
2
2.1 ASTM Standards:
4.3 Emulsified asphalts with viscosity testing requirements
D88 Test Method for Saybolt Viscosity
to 25 °C [77 °F] should be mixed or stirred at 25 6 3 °C [77 6
D977 Specification for Emulsified Asphalt
5 °F] in the original sample container to achieve homogeneity.
NOTE 1—Emulsified asphalts with viscosity testing requirements of
25 °C [77 °F] may be heated and stirred as specified in 4.2, if necessary.
1 In the event the method described in 4.2 is used, the sample should be
This test method is under the jurisdiction of ASTM Committee D04 on Road
cooled to 25 6 3 °C [77 6 5 °F] and stirred before testing.
and Paving Materials and is the direct responsibility of Subcommittee D04.42 on
Emulsified Asphalt Test.
Current edition approved Dec. 1, 2018. Published January 2019. Originally 5. Apparatus
approved in 2009. Last previous edition approved in 2017 as D7496 – 17. DOI:
5.1 Viscometer—A Saybolt Furol viscometer conforming to
10.1520/D7496-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or the requirements specified in Test Method D88.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 Sieve—An 850-µm sieve or a 20-mesh strainer of wire
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. cloth, framed or unframed. Refer to Specification E11.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
...
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: D7496 − 17 D7496 − 18
Standard Test Method for
Viscosity of Emulsified Asphalt by Saybolt Furol
1
Viscometer
This standard is issued under the fixed designation D7496; 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 Saybolt Furol viscometer to measure the consistency of emulsified asphalt. It is applicable to
all the emulsified asphalts specified in Specifications D977 and D2397D2397/D2397M.
1.2 The values stated in either SI units or inch-pound units are to be regarded as standard. No other units of measurement are
included in this separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall
be used independently of the other. Combining values from the two systems may result in noncompliance with the standard.
1.3 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.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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:
D88 Test Method for Saybolt Viscosity
D977 Specification for Emulsified Asphalt
D2397D2397/D2397M Specification for Cationic Emulsified Asphalt
E1 Specification for ASTM Liquid-in-Glass Thermometers
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E1137/E1137M Specification for Industrial Platinum Resistance Thermometers
3. Significance and Use
3.1 Viscosity has significance in the use of emulsified asphalts because it is a property which affects their utility. When used
in application types of construction, the material must be thin enough to be uniformly applied through the spray bar of distributor,
yet thick enough so that it will not flow from the crown or grade of the road. For mixing-grade emulsions, the viscosity may affect
mixibilitymixability and resulting thickness of film on the aggregate. The viscosity of many emulsified asphalts is affected by shear.
Therefore, strict adherence to test procedure is necessary to achieve precision.
4. Sample Conditioning for Testing
4.1 All emulsified asphalts shall be properly stirred to achieve homogeneity before testing.
4.2 All emulsified asphalts with the viscosity testing requirements of 50 °C [122 °F] shall be heated to 50 6 3 °C [122 6 5 °F]
in the original sample container in a water bath or oven. The container should be vented to relieve pressure. After the sample
reaches 50 6 3 °C, 3 °C [122 6 5 °F], stir the sample to achieve homogeneity.
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 Sept. 1, 2017Dec. 1, 2018. Published September 2017January 2019. Originally approved in 2009. Last previous edition approved in 20112017
as D7496 – 11.D7496 – 17. DOI: 10.1520/D7496-17.10.1520/D7496-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D7496 − 18
4.3 Emulsified asphalts with a viscosity testing requirements to 25 °C [77 °F] should be mixed or stirred at 25 6 3 °C [77 6
5 °F] in the original sample container to achieve homogeneity.
NOTE 1—Emulsified asphalts with viscosity testing requirements of 25 °C [77 °F] may be heated and stirred as specified in 4.2, if necessary. I
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