ASTM D6930-19

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:D6930 −19
Standard Test Method for
1
Settlement and Storage Stability of Emulsified Asphalts
This standard is issued under the fixed designation D6930; 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. Significance and Use
1.1 This test method covers the ability of an emulsified 3.1 This test method is useful for determining, in a com-
asphalt to remain as a uniform dispersion during storage. It is
paratively short time, the storage stability or settlement of an
applicable to emulsified asphalts composed principally of a
emulsified asphalt. It is a measure of the permanence of the
semisolid or liquid asphaltic base, water, and an emulsifying
dispersion as related to time, but it is not to be construed to
agent.
have significance as a measure of other stability aspects
involved in use.
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
NOTE 1—The quality of the results produced by this standard are
standard.
dependent on the competence of the personnel performing the procedure
and the capability, calibration, and maintenance of the equipment used.
1.3 The text of this standard references notes and footnotes
Agencies that meet the criteria of Specification D3666 are generally
which provide explanatory material. These notes and footnotes
considered capable of competent and objective testing, sampling,
(excluding those in tables and figures) shall not be considered
inspection, etc. Users of this standard are cautioned that compliance with
as requirements of the standard. Specification D3666 alone does not completely ensure reliable results.
Reliable results depend on many factors; following the suggestions of
1.4 This standard does not purport to address all of the
Specification D3666 or some similar acceptance guideline provides a
safety concerns, if any, associated with its use. It is the
means of evaluating and controlling some of those factors.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Summary of Test Method
mine the applicability of regulatory limitations prior to use.
4.1 This test method determines the difference in percent
1.5 This international standard was developed in accor-
residue of samples taken from the top and bottom of material
dance with internationally recognized principles on standard-
placed in undisturbed simulated storage for a specified time
ization established in the Decision on Principles for the
period. The result is expressed by determining the difference
Development of International Standards, Guides and Recom-
between the percent residue of the top and bottom samples for
mendations issued by the World Trade Organization Technical
the storage cylinder.
Barriers to Trade (TBT) Committee.
5. Sample Conditioning for Testing
2. Referenced Documents
2
5.1 All emulsified asphalts shall be properly stirred to
2.1 ASTM Standards:
achieve homogeneity before testing.
D3666 Specification for Minimum Requirements for Agen-
cies Testing and Inspecting Road and Paving Materials
5.2 All emulsified asphalts with viscosity testing require-
D6934 Test Method for Residue by Evaporation of Emulsi-
ments of 50 °C shall be heated to 50 6 3 °C in the original
fied Asphalt
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.
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 5.3 Emulsified asphalts with viscosity testing requirements
Emulsified Asphalt Test.
of 25 °C should be mixed or stirred at 25 6 3 °C in the original
Current edition approved July 1, 2019. Published August 2019. Originally
sample container to achieve homogeneity.
approved in 2004. Last previous edition approved in 2010 as D6930 – 10. DOI:
10.1520/D6930-19.
NOTE 2—Emulsified asphalts with viscosity testing requirements of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
25 °C may be heated and stirred as specified in 5.2, if necessary. In the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
event the 5.2 method is used, the sample should be cooled to 25 63°C
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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