ASTM D6999-19 PDF Download

The ASTM D6999-19 standard addresses the practice of diluting emulsified asphalt with water or other liquids in the field. By conducting this practice, it can be determined whether the emulsified asphalt can be diluted without the water and asphalt irreversibly separating (breaking).

The standard notes that the quality of the water used for dilution is important. Water supplies in some regions may contain high levels of dissolved salts and minerals that can cause emulsified asphalts to break more easily. Therefore, it is recommended that users evaluate the potential local job site water sources, such as tap water, using this practice before attempting a field dilution.

This standard is applicable to all medium and slow-setting emulsified asphalts and allows for the substitution of other liquids, such as propylene glycol, in place of water. However, it does not cover the rapid-setting types of emulsified asphalts.

It is important to note that while this standard references notes and footnotes for explanatory purposes, these notes and footnotes (excluding those in tables and figures) are not considered requirements of the standard.