1.1 本试验方法提供了一种在实验室测量用于制造多孔混凝土的泡沫（空气电池）的发泡化学品性能的方法。 1.2 该试验方法包括以下内容: 1.2.1 制造实验室数量的多孔混凝土。 1.2.2 在常规机械中处理后，测定新制备的多孔混凝土和硬化混凝土的空气含量。 1.2.3 测定硬化混凝土的以下性能:抗压强度、抗拉劈裂强度、密度和吸水率。根据材料的拟定用途，可能没有必要在所有情况下研究上述所有特性。 1.3 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。 每个系统中规定的值可能不是精确的等效值；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.4 如果从另一标准获得的所需结果未在本标准使用的相同单位制中报告，则允许使用SI快速参考指南中的转换因子转换这些结果。 1.5 本标准的文本引用了提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.6 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。 1.7 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 本试验方法用于开发数据，以进行比较或符合规范要求 C869/C869M .

1.1 This test method furnishes a way of measuring, in the laboratory, the performance of a foaming chemical to be used in producing foam (air cells) for making cellular concrete. 1.2 This test method includes the following: 1.2.1 Manufacture of laboratory quantities of cellular concrete. 1.2.2 Determination of the air content of the freshly prepared cellular concrete and of the hardened concrete after handling in conventional machinery. 1.2.3 Determination of the following properties of the hardened concrete: compressive strength, tensile splitting strength, density, and water absorption. It may not be necessary to study all of the above properties in all cases, depending on the proposed use of the material. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.4 If the required results obtained from another standard are not reported in the same system of units as used by this standard, it is permitted to convert those results using the conversion factors found in the SI Quick Reference Guide. 1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard. 1.6 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. 1.7 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 develop data for comparison or compliance with the requirements of Specification C869/C869M .