1.1 本试验方法 2. 提供了水硬性水泥砂浆或混凝土在试验条件下酸溶氯化物的取样和分析程序。在大多数情况下，酸溶性氯化物相当于总氯化物。 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。有些值只有国际单位制，因为在实践中没有使用英寸-磅当量。 注1: 筛孔尺寸由规范中的标准名称确定 E11 . 括号中的替代名称仅供参考，并不代表不同的标准筛孔尺寸。 1.3 本标准的文本引用了提供解释信息的注释和脚注。这些注释和脚注不应视为本标准的要求。 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。 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====== 4.1 大多数水硬性水泥系统中酸溶性氯化物的量等于系统中氯化物的总量。然而，一些可能被引入砂浆或混凝土中的有机物质含有氯化物，最初不溶于酸，最终会电离，因此在极碱性水泥系统中暴露一段时间后，会变为酸溶性或水溶性。 4.2 已知硫化物会干扰氯化物含量的测定。高炉矿渣骨料和水泥中含有硫化物硫，其浓度可能会造成此类干扰，并产生错误的高测试结果。试验方法中讨论的过氧化氢处理 C114 ，用于消除此类干扰。 4.3 有些骨料含有氯化物，不能用于腐蚀。将使用该方法检测此类氯化物。 4.

1.1 This test method 2 provides procedures for the sampling and analysis of hydraulic-cement mortar or concrete for chloride that is acid soluble under the conditions of test. In most cases, acid-soluble chloride is equivalent to total chloride. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Some values have only SI units because the inch-pound equivalents are not used in practice. Note 1: Sieve size is identified by its standard designation in Specification E11 . The alternative designation in parentheses is for information only and does not represent a different standard sieve size. 1.3 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes shall not be considered as requirements of this 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. 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 ====== 4.1 The amount of acid-soluble chloride in most hydraulic-cement systems is equal to the total amount of chloride in the system. However, some organic substances that may be introduced into mortar or concrete contain chloride that is initially acid-insoluble that can eventually ionize and thus become acid-soluble or water-soluble after a period of exposure in the very alkaline cement system. 4.2 Sulfides are known to interfere with the determination of chloride content. Blast-furnace slag aggregates and cements contain sulfide sulfur in concentrations that can cause such interference and produce erroneously high test results. Treatment with hydrogen peroxide, as discussed in Test Methods C114 , is used to eliminate such interference. 4.3 There are aggregates that contain chloride that is not available for corrosion. Such chloride will be detected by the use of this method. 4