1.1 本试验方法涵盖了通过流动表法测定可浇铸耐火材料混合物稠度的程序。 1.2 本试验方法适用于规则重量的耐火浇注料、绝缘耐火浇注料和成型时需要剧烈振动的耐火浇注料，如分类中所述 C401型 . 它们也适用于含有金属纤维的此类浇注料。 1.3 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。 1.4 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。 1.5 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 用于制备试样的浇注料混合物中的水量对后续试验结果有重大影响。本试验方法主要用于确定和再现制备试样时耐火浇注料最佳浇注所需的稠度，并定量表示该稠度。正确的含水量是获得均匀试样必须控制的主要因素之一。 过量的水会降低强度，增加体积收缩，并促进浇注料成分的分离。由于浇筑过程中固结不良，水不足会在浇注料中产生“蜂窝”（空隙），并阻止水泥完全水化。 3.2 流量表（见规范中的草图 C230/C230M )已被发现是测量浇注料稠度的极好工具，应在需要数值结果的情况下使用。由于浇注料的“本体”或可塑性有所不同，已发现良好的铸造范围（用数字表示）可能因浇注料而异。而一种材料可以在40到60之间铸造 % 流动时，另一种材料可能需要在60到80之间 % 正确流动的流量范围。 因此，我们发现，不能为所有浇注料规定任意的最佳范围。然后，流量表成为测量流量而不是确定流量的工具。它可以让操作员遵循制造商的建议，或在实验室之间重现特定浇注料的一致性。 3.3 必须严格控制湿混合的总时间，以获得可重复的结果。 3.4 本试验方法不用于确定喷补应用的适当含水量，尽管它可以为熟练操作员提供有价值的解释信息。

1.1 This test method covers the procedure for determining the consistency of castable refractory mixes by the flow table method. 1.2 This test method applies to regular-weight castable refractories, insulating castable refractories, and castable refractories that require heavy vibration for forming, which are described in Classification C401 . They also apply to such castables containing metal fibers. 1.3 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. 1.4 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. 1.5 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 amount of water used in a castable mix for preparing test specimens has a significant influence on subsequent test results. This test method is used primarily to determine and reproduce the consistency required for the optimum casting of refractory castables in the preparation of test specimens and to express that consistency quantitatively. The correct water content is one of the major factors that must be controlled to obtain uniform test specimens. Excess water can reduce strength, increase volume shrinkage, and promote segregation of the castable ingredients. Insufficient water can produce “honeycombs” (air voids) in the castable because of poor consolidation during placement and prevent complete hydration of cement. 3.2 The flow table (see sketches in Specification C230/C230M ) has been found to be an excellent tool for measuring the consistency of a castable, and should be used in cases where a numerical result is required. Since castables differ somewhat in their “body” or plasticity, it has been found that a good casting range, expressed numerically, might vary from castable to castable. While one material may cast well between 40 and 60 % flow, another material may need to be in the 60 to 80 % flow range to properly flow. Because of this, it has been found that no arbitrary optimum range can be stated for all castables. The flow table then becomes a tool for measuring the flow and not determining it. It can allow the operator to follow the manufacturer's recommendations or to reproduce the consistency of a particular castable between laboratories. 3.3 Total time of wet mixing must be closely controlled to obtain reproducible results. 3.4 This test method is not intended to be used to determine the proper water content for gunning applications, although it may provide information of value for interpretation by a skilled operator.