1.1本试验方法包括测定捣打耐火材料和塑料耐火材料的干燥收缩率以及组合干燥和线性变化。 1.2以英寸-磅为单位的数值应视为标准值。括号中的值仅供参考。 1.3 本标准并非旨在解决与其使用相关的所有安全问题。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本试验方法有助于根据加热后的线性稳定性对捣打和塑性耐火材料进行定量评级或排序。 该试验方法还可用于根据线性变化标准确定是否可以在指定应用中使用捣打或塑料耐火材料。 本试验方法不包括碱性材料和含碳材料。 该试验方法可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夯实或塑料耐火材料完整性所需的接缝数量。

1.1 This test method covers the determination of the drying shrinkage and of the combined drying and linear change of ramming and plastic refractories. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are provided for information only. 1.3 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This test method is useful in quantitatively rating or ranking both ramming and plastic refractories by their linear stability after heating. This test method is also useful for determining whether a ramming or plastic refractory can be used in a specified application based on linear change criteria. This test method excludes basic and carbon bearing materials. 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 plastic refractory in a large installation.