Standard Active Last Updated: Dec 16, 2019 Track Document
ASTM D6999-19

Standard Practice for Miscibility of Emulsified Asphalts

Standard Practice for Miscibility of Emulsified Asphalts D6999-19 ASTM|D6999-19|en-US Standard Practice for Miscibility of Emulsified Asphalts Standard new BOS Vol. 04.03 Committee D04
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Significance and Use

4.1 It is sometimes desirable to dilute an emulsified asphalt in the field with water. This practice is designed to ascertain if this may be done without irreversibly separating the water and asphalt (breaking) in the emulsified asphalt.

Note 2: Water supplies available in some areas contain high levels of dissolved salts and other minerals which coalesce (break) emulsified asphalts to a greater degree than distilled or deionized water. It is recommended that the user evaluate potential local job site water sources such as tap water using this practice before attempting a field dilution.


1.1 This practice covers the suitability of all medium and slow-setting emulsified asphalts to be diluted with water. If desired, other liquids may be substituted for water, such as propylene glycol. It is not applicable to the rapid-setting types.

1.2 Units—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 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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Book of Standards Volume: 04.03
Developed by Subcommittee: D04.42
Pages: 2
DOI: 10.1520/D6999-19
ICS Code: 93.080.20