1.1 本试验方法包括测定硬化水硬性水泥混凝土样品的硅酸盐水泥含量。 1.2 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 1.3 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。 这种方法中使用的部分或全部化学品的处置可能需要遵守EPA或其他监管指南。 1.4 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====== 3.1 本试验方法由两个独立程序组成:氧化物分析程序（由两个子程序组成）和萃取程序。每个程序都需要相当程度的化学技能和相对复杂的化学仪器。除已知干扰的影响外，测定的水泥含量通常等于或略大于实际值，但顺丁烯二酸程序除外，在顺丁烯二酸程序中，当水泥浆碳化时，结果也可能显著较低( 注1 ). 注1: 由于存在某些限制，该程序也适用于估算由混合水硬性水泥和硅酸盐水泥与火山灰或矿渣的混合物制成的混凝土中硅酸盐水泥和火山灰或矿渣的组合含量。当应用于由混合水泥或火山灰制成的混凝土时，本试验方法的结果取决于火山灰的成分、混凝土的龄期、火山灰的反应程度以及本试验方法只能确定波特兰的事实- 混合水泥的水泥成分。该试验方法应仅通过使用校准混凝土样品或其他信息来测定混合水泥含量或火山灰含量。该测试方法的早期版本可以提供Hime详细说明的有用信息 3. 还有米尼克。 4.

1.1 This test method covers the determination of portland-cement content of a sample of hardened hydraulic-cement concrete. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 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. Disposal of some or all of the chemicals used in this method may require adherence to EPA or other regulatory guidelines. 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. ====== Significance And Use ====== 3.1 This test method consists of two independent procedures: an oxide-analysis procedure that consists of two sub-procedures and an extraction procedure. Each procedure requires a substantial degree of chemical skill and relatively elaborate chemical instrumentation. Except for the influence of known interferences, determined cement contents are normally equal to, or slightly greater than, actual values except for the Maleic Acid procedure where results can also be significantly low when the paste is carbonated ( Note 1 ). Note 1: With certain limitations, the procedure is also applicable for estimating the combined content of portland cement and pozzolan or slag in concretes made with blended hydraulic cement and blends of portland cement with pozzolans or slags. The results of this test method when applied to concretes made with blended cements or pozzolans depend on the composition of the pozzolan, the age of the concrete, the extent of reaction of the pozzolan and the fact that this test method may determine only the portland-cement component of a blended cement. The test method should be applied to determination of the blended cement content or the pozzolanic content only by use of calibration concrete samples or other information. Earlier versions of this test method can provide useful information as detailed by Hime 3 and Minnick. 4