1.1 本试验方法包括通过测量模制试样在受到冲击时的塑性变形来测定耐火粘土和高铝耐火塑料的可加工性指数。 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 可加工性指数是衡量耐火塑料材料可被夯实、喷补或振动到位的设施的指标。 3.2 加工性指数通常用于控制制造过程中塑料的稠度。它也被发现有助于消费者接受规范。 3.3 可加工性指数的测定可以为开发塑料体提供信息。当样品在不同含水量的冲击下破裂时，表明材料“短”或缺乏塑性。 3.4 在撞击过程中分裂的样品的测定将难以再现。如果样品破裂，测量结果不是变形的真实指示。这应该在报告中指出。

1.1 This test method covers the determination of the workability index of fireclay and high-alumina refractory plastics by measuring the plastic deformation of a molded test specimen when subjected to impacts. 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 Workability index serves as a measure of the facility with which refractory plastic materials can be rammed, gunned, or vibrated into place. 3.2 Workability index is commonly used to control consistency of plastics during manufacture. It has also been found useful for specification acceptance by the consumer. 3.3 The workability index determination can provide information for developing a plastic body. When a sample splits under impact at various water contents, it is an indication that the material is “short” or lacking in plasticity. 3.4 Determinations on samples that split during impact will be difficult to reproduce. If the sample splits, the measurement is not a true indication of deformation. This should be noted in the report.