1.1 本规程涵盖适用于适当准备的路面或基层的单一和多重沥青表面处理的沥青材料和骨料的使用率以及沥青材料的类型和等级。 1.2 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。 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。 每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 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 本规程旨在为参与沥青表面处理设计的人员提供指导。它涵盖了各种表面处理的典型应用率，并涵盖了炎热和寒冷天气条件下沥青材料的骨料尺寸和推荐等级。 4.2 给出的典型沥青材料应用率适用于正常表面和非多孔骨料。当涉及非正常表面或多孔骨料或两者时，规定了速率调整。

1.1 This practice covers the rates of application of asphalt materials and aggregates and types and grades of asphalt materials for single and multiple asphalt surface treatments as applied to suitably prepared pavements or bases. 1.2 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with 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 This practice is intended to be used as a guide by those involved in the design of asphalt surface treatments. It covers typical application rates for the various types of surface treatments and covers aggregate sizes and recommended grades of asphaltic material for both hot and cool weather conditions. 4.2 The typical asphalt material application rates given are for normal surfaces and non-porous aggregates. Provision is made for rate adjustment when other than normal surfaces or porous aggregates, or both, are involved.