ASTM D6929-21

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Designation: D6929 − 16 D6929 − 21
Standard Practice tofor
EvaluateEvaluating the Effect of Freezing on Emulsified
1
Asphalts
This standard is issued under the fixed designation D6929; 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 Emulsified asphalt is normally damaged by freezing temperatures, but specially formulated materials are expected to pass this
practice.
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 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 practicestandard 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.
1.5 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
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2.1 ASTM Standards:
D3666 Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
3. Significance and Use
3.1 Certain agencies who desire to use, store, or transport emulsified asphalt under less than ideal weather conditions may require
that the product remain homogeneous (unbroken) after being subjected to a temperature of −18 °C.
NOTE 1—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.
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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 D04.42 on Emulsified
Asphalt Test.
Current edition approved Dec. 1, 2016May 1, 2021. Published January 2017May 2021. Originally approved in 2004. Last previous edition approved in 20102016 as
D6929 – 10.D6929 – 16. DOI: 10.1520/D6929-16.10.1520/D6929-21.
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volume information, refer to the standard’s Document Summary page on the ASTM website.
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D6929 − 21
4. Sample Conditioning
4.1 All emulsified asphalts shall be properly stirred to achieve homogeneity.
4.2 All emulsified asphalts with viscosity testing requirements of 50 °C shall be heated to 50 6 3 °C 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, stir the
sample to achieve homogeneity.
4.3 Emulsified asphalts with viscosity testing requirements of 25 °C should be mixed or stirred at 25 6 3 °C in the original sample
container to achieve homogeneity.
NOTE 2—Emulsified asphalts with viscosity testing requirements of 25 °C may be heated and stirred as specified in 3.24.2, if necessary. In the event the
3.24.2 method is used, the sample should be cooled to 25 6 3 °C.
5. Apparatus
5.1 Freezer—Capable of maintaining a test temperature of –18 6 5 °C.
5.2 Metal Container—Container, such as a 500-mL press-top can.
5.3 Glass Stirring Rod—Rod, of optional size.
6. Procedure
6.1 Place approximately 400 g of the emulsified a
...