1.1 本试验方法包括使用75测量水硬性水泥浆高度的变化 毫米乘以150 毫米[3 英寸乘6 in.]圆柱体，当圆柱体受到保护，使得高度变化的趋势不包括蒸发，从而导致干燥、吸收水分、碳酸化或暴露在范围外的温度下时23 °C±2.0 摄氏度[73 °F±3.5 °F]，或可选地，至另一个控制在±2.0范围内的指定温度 °C[±3.5 °F]。 1.2 如果需要，该试验方法可适用于涉及与该试验方法规定的标准程序不同的时间表或环境处理的高度变化研究。 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。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得合并。 注1: 筛网尺寸由其在规范中的标准名称确定 第11页 括号中给出的替代名称仅供参考，不代表不同的标准筛尺寸。 1.4 本标准的文本引用了提供解释性材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为本标准的要求。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 ( 警告- 新鲜的水硬性水泥混合物具有腐蚀性，长时间暴露可能会对暴露的皮肤和组织造成化学灼伤。 2. ) 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 该试验方法旨在提供一种评估水硬性水泥浆在规定的28天试验期内保持稳定体积的能力的方法，前提是高度变化的趋势不包括蒸发、吸收水分、碳酸化或暴露在23.0范围以外的温度下引起的干燥影响 °C±2.0 摄氏度[73 °F±3.5 °F]( 注2 )。当测试条件一节中所述的选项被行使时，情况例外。 注2: 本试验方法不测量设置前的高度变化（见试验方法 C827/C827米 )。

1.1 This test method covers measurement of the changes in height of hydraulic-cement grout by the use of 75 mm by 150 mm [3 in. by 6 in.] cylinders, when the cylinders are protected so that the tendency to change in height does not include evaporation so as to cause drying, uptake of moisture, carbonation, or exposure to temperatures outside the range 23 °C ± 2.0 °C [73 °F ± 3.5 °F] or, optionally, to another specified temperature controlled within ±2.0 °C [±3.5 °F]. 1.2 If desired, this test method can be adapted to studies of changes in height involving either schedules or environmental treatment different from the standard procedures prescribed by this test method. 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 are not necessarily 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. Note 1: Sieve size is identified by its standard designation in Specification E11 . The alternative designation given in parentheses is for information only and does not represent a different standard sieve size. 1.4 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 this standard. 1.5 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. ( Warning— Fresh hydraulic cementitious mixtures are caustic and may cause chemical burns to exposed skin and tissue upon prolonged exposure. 2 ) 1.6 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 intended to provide a means of assessing the ability of a hydraulic-cement grout to retain a stable volume during the stipulated testing period of 28 days, provided that the tendency to change height does not include the effects of drying caused by evaporation, uptake of moisture, carbonation, or exposure to temperatures outside the range 23.0 °C ± 2.0 °C [73 °F ± 3.5 °F] ( Note 2 ). An exception is made when the options described in the section on test conditions are exercised. Note 2: This test method does not measure the change in height before setting (see Test Method C827/C827M ).