1.1 本试验方法包括使用定量X射线（QXRD）分析直接测定硅酸盐水泥或硅酸盐水泥熟料中各相的质量比例。本标准涵盖以下阶段:阿利特（硅酸三钙）、贝利特（硅酸二钙）、铝酸盐（铝酸三钙）、铁素体（铁铝酸四钙）、方镁石（氧化镁）、石膏（二水硫酸钙）、钡石（半水硫酸钙）、硬石膏（硫酸钙）和方解石（碳酸钙）。 1.2 本试验方法规定了分析程序的某些一般方面，但未规定详细方面。介绍了推荐的程序，但没有具体说明。无论选择何种程序，用户应通过分析认证标准物质（CRM）证明为此目的选择的特定分析程序合格（即提供可接受的精度和偏差）（见 注1 ). 推荐的程序用于循环分析，以确定本试验方法的精度水平。 注1: 试验方法中化学分析替代方法的性能要求中使用了类似的方法 C114 . 1.3 以国际单位制表示的数值应视为标准。 1.4 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。 有关具体危险，请参阅第节 9 . 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《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====== 6.1 该试验方法允许直接测定水泥或硅酸盐水泥熟料中某些单独相的比例。因此，它为使用规范中的方程间接估计相位比例提供了一种替代方法 C150/C150米 （附录A1）。 6.2 本试验方法假设操作员有资格操作X射线衍射仪并解释X射线衍射光谱。 6.3 本试验方法可作为水泥制造质量控制计划的一部分。 6.4 该试验方法可用于预测水化水泥和混凝土的性能和性能，这些性能和性能是相组成的函数。 6.5 QXRD提供了整体分析（即几克材料的加权平均成分）。因此，结果可能与显微镜方法的结果不完全一致。

1.1 This test method covers direct determination of the proportion by mass of individual phases in portland cement or portland-cement clinker using quantitative X-ray (QXRD) analysis. The following phases are covered by this standard: alite (tricalcium silicate), belite (dicalcium silicate), aluminate (tricalcium aluminate), ferrite (tetracalcium aluminoferrite), periclase (magnesium oxide), gypsum (calcium sulfate dihydrate), bassanite (calcium sulfate hemihydrate), anhydrite (calcium sulfate), and calcite (calcium carbonate). 1.2 This test method specifies certain general aspects of the analytical procedure, but does not specify detailed aspects. Recommended procedures are described, but not specified. Regardless of the procedure selected, the user shall demonstrate by analysis of certified reference materials (CRM's) that the particular analytical procedure selected for this purpose qualifies (that is, provides acceptable precision and bias) (see Note 1 ). The recommended procedures are ones used in the round-robin analyses to determine the precision levels of this test method. Note 1: A similar approach was used in the performance requirements for alternative methods for chemical analysis in Test Methods C114 . 1.3 The values stated in SI units shall be regarded as 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. For specific hazards, see Section 9 . 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 ====== 6.1 This test method allows direct determination of the proportion of some individual phases in cement or portland-cement clinker. Thus it provides an alternative to the indirect estimation of phase proportion using the equations in Specification C150/C150M (Annex A1). 6.2 This test method assumes that the operator is qualified to operate an X-ray diffractometer and to interpret X-ray diffraction spectra. 6.3 This test method may be used as part of a quality control program in cement manufacturing. 6.4 This test method may be used in predicting properties and performance of hydrated cement and concrete that are a function of phase composition. 6.5 QXRD provides a bulk analysis (that is, the weighted average composition of several grams of material). Therefore, results may not agree precisely with results of microscopical methods.