1.1 本试验方法包括测量用作预拌混凝土搅拌水的水中固体含量及其密度。固体含量以百万分之一（ppm）或水样质量百分比表示。 1.2 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.3 本标准的文本引用了提供说明材料的注释和脚注。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。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 当一个或多个水源是来自混凝土生产操作的冲洗水或当作为混凝土中的混合水进行配料时含有固体的水时，该试验方法用于确定用于生产混凝土的混合水的固体含量。 4.2 试验方法提供了一种确定水的密度和固体含量之间关系的方法，以符合混合水的固体含量限值，如规范 C1602/C1602米 . 4.3 在混凝土生产过程中，测得的水性是其密度，然后可用于根据本试验方法中所述的程序估算固体含量。 4.4 为了建立水的密度和固体含量之间的相关性，应测试覆盖生产期间预计固体浓度范围的水样。

1.1 This test method covers the measurement of the solids content in water for use as mixing water in ready-mixed concrete and the measurement of its density. Solids content is expressed in terms of parts per million (ppm) or in terms of percent by mass of the water sample. 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 standard 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 the 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 is used to determine the solids content of mixing water used to produce concrete when one or more of the water sources is wash water from concrete production operations or water that contains solids when batched as mixing water in concrete. 4.2 The test method provides a means to determine the relationship between the density and solids content of water for compliance with solids content limits of mixing water such as in Specification C1602/C1602M . 4.3 During production of concrete, the water property measured is its density, which can then be used to estimate the solids content from procedures described in this test method. 4.4 To develop a correlation between the density and solids content of water, water samples should be tested that cover the range of solids concentrations anticipated during production.