1.1 本试验方法包括测定耐火捣打混合物和塑料的干燥收缩率以及干燥和线性变化的组合。 1.2 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对国际单位制的数学转换，仅供参考，不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、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====== 3.1 该试验方法可用于根据加热后的线性稳定性对捣实塑料和耐火塑料进行定量评级或排名。 3.2 该试验方法也可用于根据线性变化标准确定捣实塑料或耐火塑料是否可用于特定应用。 3.3 本试验方法不包括碱性和碳- 轴承材料。 3.4 这种测试方法可以为耐火材料装置的工程和设计提供数据。线性变化数据可用于确定在大型装置中保持捣实或耐火塑料完整性所需的接头数量。

1.1 This test method covers the determination of the drying shrinkage and of the combined drying and linear change of refractory ramming mixes and plastics. 1.2 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. 1.3 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 ====== 3.1 This test method is useful in quantitatively rating or ranking both ramming and refractory plastics by their linear stability after heating. 3.2 This test method is also useful for determining whether a ramming or refractory plastic can be used in a specified application based on linear change criteria. 3.3 This test method excludes basic and carbon-bearing materials. 3.4 This test method can produce data for the engineering and design of refractory installations. The linear change data can be used to determine the number of joints necessary to maintain integrity of ramming or refractory plastic in a large installation.