1.1 本试验方法包括水硬性水泥的密度和相对密度（无量纲量）的测定。 1.2 以SI单位表示的值将被视为标准值。本标准不包括其他计量单位。 1.3 本试验方法的正文参考了提供解释材料的注释和脚注。这些注释和脚注，不包括表格和图表中的注释和脚注，不应被视为本标准的要求。 1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.5 本国际标准是根据《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则制定的世界贸易组织技术性贸易壁垒(TBT)委员会发布的建议和建议。 ======意义和用途====== 4.1 本试验方法提供了使用非仪器技术测定水硬性水泥样品密度的程序。 4.2 相对密度用于计算含有水硬性水泥的各种混合物中水硬性水泥所占的体积。这用于水泥和混凝土混合物的设计和控制。

1.1 This test method covers the determination of the density and the relative density, a dimensionless quantity, of hydraulic cement. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 The text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes, excluding those in tables and figures, shall not be considered as requirements of this 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 ====== 4.1 This test method provides a procedure for the determination of density of hydraulic cement samples using non-instrumental techniques. 4.2 Relative density is used to calculate the volume occupied by hydraulic cement in various mixtures containing hydraulic cement. This is used in the design and control of cement and concrete mixtures.