1.1 本试验方法包括在规定温度下，在规定时间内承受规定压缩载荷时，测定耐火材料形状的变形或剪切阻力。 1.2 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。 1.3 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====== 3.1 耐火材料形状在高温下承受规定负荷的能力是衡量材料高温使用潜力的一个指标。根据定义，耐火材料形状必须能够抵抗高温引起的变化，并且当耐火材料形状经受本试验方法时，可以清楚地证明在高温下承受显著载荷时能够承受变形或形状变化。测试方法通常在足够高的温度下运行，以允许一些液体在测试砖内形成或导致粘结系统减弱。结果通常是平行于施加载荷的样品尺寸减小，垂直于载荷方向的样品尺寸增大。偶尔会发生剪切断裂。由于该试验提供了易于测量的尺寸变化，因此可以建立规定的限值，并且该试验方法长期用于确定耐火材料质量。 测试方法通常用于在生产者和消费者之间建立书面规范。 3.2 本试验方法不适用于在氧化气氛中不稳定的耐火材料，除非提供保护试样的方法。

1.1 This test method covers the determination of the resistance to deformation or shear of refractory shapes when subjected to a specified compressive load at a specified temperature for a specified time. 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 The ability of refractory shapes to withstand prescribed loads at elevated temperatures is a measure of the high-temperature service potential of the material. By definition, refractory shapes must resist change due to high temperature, and the ability to withstand deformation or shape change when subjected to significant loading at elevated temperatures is clearly demonstrated when refractory shapes are subjected to this test method. The test method is normally run at a sufficiently high temperature to allow some liquids to form within the test brick or to cause weakening of the bonding system. The result is usually a decrease in sample dimension parallel to the applied load and increase in sample dimensions perpendicular to the loading direction. Occasionally, shear fracture can occur. Since the test provides easily measurable changes in dimensions, prescribed limits can be established, and the test method has been long used to determine refractory quality. The test method has often been used in the establishment of written specifications between producers and consumers. 3.2 This test method is not applicable for refractory materials that are unstable in an oxidizing atmosphere unless means are provided to protect the specimens.