1.1 本试验方法涵盖砌筑砂浆样品的岩相检查和化学分析程序。基于这种检查和分析，可以确定砌筑砂浆中的成分比例。 注1: 该方法也适用于水硬性水泥基灰泥和灰泥。一些历史上的迫击炮可能含有可能干扰的不可分解成分。然而，通过岩相检查可以获得重要信息。 1.2 化学结果的解释和计算取决于岩相检查的结果。 单独使用化学结果违反本试验方法的要求。 1.3 采样、岩相检查、化学分析和成分比例计算程序见以下章节: 部分 取样 7. 岩相检查 8. 化学分析 9 砂浆比例计算 10 汇报 11 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 本标准的文本引用了提供解释材料的注释和脚注。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。 1.6 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。 1.7 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====== 4.1 本试验方法提供了砌筑砂浆成分的砂浆岩相检查和化学分析程序。这些成分可能包括硅酸盐水泥、熟石灰或白云质石灰、砌筑水泥、骨料和空气。 4.2 测试方法由程序和子程序组成，每个程序都需要相当程度的岩相和化学技能以及相对复杂的仪器。 4.3 考虑的化学数据以及砂浆的岩相检查结果提供了成分比例的计算，因此可以确定规范表1（比例规范要求）中M、N、S和O型砂浆的成分 C270 . 4.4 砂浆未达到规范表1中规定的任何类型的成分 C270 并不一定意味着砂浆不符合规范要求 C270 . 砂浆可满足规范表2（性能规范要求）的替代要求 C270 . 4.5 顺丁烯二酸分析方法不适用于砂浆的分析，因为它受碳化影响很大，并且不提供钙的测定。

1.1 This test method covers procedures for petrographic examination and chemical analysis of samples of masonry mortars. Based upon such examination and analysis, proportions of components in masonry mortars can be determined. Note 1: This method is also applicable to hydraulic cement-based stucco and plaster. Some historic mortars may contain non-resolvable constituents that may interfere. However, significant information may be obtained by petrographic examinations. 1.2 Interpretations and calculations of chemical results are dependent upon results of the petrographic examination. The use of the chemical results alone is contrary to the requirements of this test method. 1.3 Procedures for sampling, petrographic examination, chemical analysis, and calculations of component proportions are given in the following sections: Section Sampling 7 Petrographic examination 8 Chemical analysis 9 Mortar proportion calculations 10 Report 11 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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. 1.6 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. 1.7 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 provides procedures for petrographic examination and chemical analysis of mortar for components of masonry mortar. These components may include portland cement, hydrated calcitic or dolomitic lime, masonry cement, aggregates, and air. 4.2 The test method consists of procedures and sub-procedures, each requiring a substantial degree of petrographic and chemical skills and relatively elaborate instrumentation. 4.3 The chemical data considered together with results of petrographic examination of a mortar provide for calculation of component proportions and thus allow a determination of mortar composition as represented by Types M, N, S, and O in Table 1 (Proportion Specification Requirements) of Specification C270 . 4.4 Failure of a mortar to have the composition of any type as defined in Table 1 of Specification C270 does not necessarily mean that the mortar does not meet the requirements of Specification C270 . The mortar may meet the alternative requirements of Table 2 (Property Specification Requirements) of Specification C270 . 4.5 The maleic acid method of analysis is not applicable for the analysis of mortar because it is greatly influenced by carbonation and does not provide for the determination of calcium.