1.1 这些试验方法适用于颗粒状松散填充绝缘材料，如蛭石和珍珠岩。它们用于具有类似流动和沉降特性的其他绝缘材料。 1.2 方法A 应用于确定体积密度。 1.3 方法B 应用于确定设计密度，并使用方法A计算沉降引起的体积损失百分比。 1.4 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.5 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。 1.6 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 方法A 主要用作制造质量控制和现场测试方法，无需调节。为了更准确的研究目的，应规定调节。 4.2 方法B 当规定时，将用于确定隔热性能（如热阻和铺设覆盖率）的密度。

1.1 These test methods are applicable to granular loose fill insulation materials such as vermiculite and perlite. They are used for other insulation materials with similar flow and settling properties. 1.2 Method A shall be used to determine bulk density. 1.3 Method B shall be used to determine design density and, with Method A, is used to calculate percent loss of volume due to settling. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 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. 1.6 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 Method A will be used primarily as a manufacturing quality control and field test method without the need for conditioning. For more accurate research purposes, conditioning shall be specified. 4.2 Method B will be used, when specified, to determine the density at which insulation properties such as thermal resistance and placement coverage are to be determined.