1.1 本规范适用于一般和特殊应用的混合水硬性水泥，使用矿渣、火山灰、石灰石或其组合，与硅酸盐水泥或硅酸盐水泥熟料或矿渣与石灰混合。 注1: 本规范规定了成分和比例，以及一些性能要求，而性能规范 C1157/C1157米 是一种水硬性水泥规范，其中性能标准单独决定产品及其验收。 1.2 以国际单位制或英寸-磅单位表示的值应单独视为标准值。每个系统中所述的值可能不是完全等效的；因此，每个系统都应独立使用。 将两个系统的值结合起来可能会导致不符合标准。国际单位制[或英寸-磅单位]的值应通过国际单位制[或英寸-英镑单位]的测量或使用中给出的转换和四舍五入规则进行适当的转换来获得 IEEE/asm SI 10 ，以其他单位[或国际单位制]进行的测量。当实践中不使用英寸-磅单位时，值仅以国际单位表示。 1.3 本规范的文本是指提供解释性材料的注释和脚注。这些注释和脚注（不包括表格和图中的注释和脚注）不是本标准的要求。 1.4 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。

1.1 This specification pertains to blended hydraulic cements for both general and special applications, using slag, pozzolan, limestone, or some combination of these, with portland cement or portland cement clinker or slag with lime. Note 1: This specification prescribes ingredients and proportions, with some performance requirements, whereas Performance Specification C1157/C1157M is a hydraulic cement specification in which performance criteria alone govern the products and their acceptance. 1.2 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, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. Values in SI units [or inch-pound units] shall be obtained by measurement in SI units [or inch-pound units] or by appropriate conversion, using the Rules for Conversion and Rounding given in IEEE/ASTM SI 10 , of measurements made in other units [or SI units]. Values are stated in only SI units when inch-pound units are not used in practice. 1.3 The text of this specification refers to notes and footnotes, which provide explanatory material. These notes and footnotes (excluding those in tables and figures) are not requirements of the standard. 1.4 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.