1.1 本试验方法包括测定自流浇注耐火材料的稠度（自流度）。 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（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====== 5.1 本试验方法用于测量可浇铸耐火材料在添加液体后，在规定的时间间隔内，在给定的回火液水平下显示的稠度（自流度）。25的自流 % 已被选为在正常实践中可以将混合物倒入典型模具或形状中的最小值。 5.2 在一个回火液液位下自流的可浇铸耐火材料需要振动才能放置在较低的回火液液位。在需要振动或夯实以进行浇筑的回火液位处，应使用适用于设计用于振动浇筑的浇注耐火材料的测试方法，例如测试方法，对浇注耐火材料进行表征 C1445 . 5.3 本试验方法不适用于测定可浇铸耐火材料的可泵性。

1.1 This test method covers the determination of the consistency (degree of self-flow) of self-flowing castable refractories. 1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only. 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 ====== 5.1 This test method is used to measure the consistency (degree of self-flow) that a castable refractory demonstrates at a given level of tempering liquid at specified time intervals after the liquid is added. A self-flow of 25 % has been selected as the minimum at which a mix can be poured into typical molds or forms in normal practice. 5.2 Castable refractories which are self-flowing at one level of tempering liquid will require vibration for placement at some lower level of tempering liquid. At the tempering liquid levels which require vibration or tamping for placement, the castable refractory should be characterized using test methods which are appropriate for castable refractories designed for vibration placement, such as Test Method C1445 . 5.3 This test method is not appropriate for determining the pumpability of castable refractories.