1.1 本规程适用于在制造、储存或交付点对沥青材料进行取样。 1.2 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。将两个系统的值结合起来可能会导致不符合标准。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 取样与测试同样重要，应采取预防措施获取样品，以显示材料的真实性质和条件。 4.2 取样的目的有以下两个: 4.2.1 尽可能接近所采样材料体积的平均值，或 4.2.2 确定材料特性的最大变化。

1.1 This practice applies to the sampling of asphalt materials at points of manufacture, storage, or delivery. 1.2 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. 1.3 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. 1.4 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 Sampling is as important as testing, and precautions shall be taken to obtain samples to show the true nature and condition of the materials. 4.2 Samples are taken for either of the following two purposes: 4.2.1 To represent as nearly as possible an average of the bulk of the materials sampled, or 4.2.2 To ascertain the maximum variation in characteristics which the material possesses.