1.1 本规程涵盖了用水稀释所有中凝和慢凝乳化沥青的适用性。如果需要，可以用其他液体代替水，例如丙二醇。它不适用于快速设置类型。 1.2 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 有时需要用水稀释现场的乳化沥青。本规程旨在确定是否可以在不可逆分离乳化沥青中的水和沥青（破碎）的情况下进行。 注2: 某些地区的供水含有大量的溶解盐和其他矿物质，这些矿物质对乳化沥青的凝聚（破碎）程度高于蒸馏水或去离子水。 建议用户在尝试现场稀释之前，使用本规程评估潜在的当地工作现场水源，如自来水。

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. ====== 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.