1.1 本试验方法可用于测定城市固体废物资源回收处理过程中各种组分的体积密度。它旨在作为表征此类组分的一种手段，并为固体废物处理厂的设计者提供有用的数据。 1.2 以国际单位制表示的数值应视为标准值。括号中给出的值仅供参考。 1.3 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. 4. 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====== 5.1 本试验方法描述了处理设施中固体废物的物理特性，该特性表征了固体废物流，从而表征了资源回收分离器和处理器的操作。 5.2 体积密度是物料处理设备、分离器和处理器设计的重要特性。 5.3 在本试验方法中，体积密度与材料单个颗粒的密度不同，不被视为绝对材料特性。 此处测量的体积密度取决于容器的大小、“测试”材料的含水量以及材料装入容器的方式。例如，松散放置在容器中的材料的体积密度将低于夯实在容器中的材料的体积密度。此外，一些松散放置在容器中的材料会因其自身重量而随时间沉淀；因此，其体积密度将增加。如文所述，“测试”废物样品在测试之前可以干燥，也可以不干燥，因此计算的体积密度包括与“测试”材料相关的水分。

1.1 This test method may be used to determine the bulk density of various fractions from the resource recovery processing of municipal solid waste. It is intended as a means of characterizing such fractions and for providing data useful to designers of solid waste processing plants. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 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 ====== 5.1 This test method describes a physical property of solid waste in processing facilities, a property that characterizes the solid waste streams and hence the operation of resource recovery separators and processors. 5.2 The bulk density is an important property for the design of materials handling equipment, separators, and processors. 5.3 In this test method, bulk density is not considered an absolute material property as is the density of individual particles of a material. The measured bulk density here depends on the size of the container, the moisture content of the “as tested” material, and how the material is loaded into the container. For example, the bulk density of material placed loosely in a container will be less than that of material tamped into a container. Also, some materials placed loosely in a container will settle with time due to its own weight; thus, its bulk density will increase. As written, the “as tested” waste sample may or may not be dried prior to testing, so that calculated bulk density includes the moisture associated with the “as tested” material.