1.1 本试验方法涵盖了测定化学外加剂对混凝土中金属腐蚀影响的程序。该试验方法可用于评估旨在抑制混凝土中钢的氯离子腐蚀的材料。它也可用于评估外加剂本身或在氯化物环境中的腐蚀性。本试验不适用于乳液。 1.2 以国际单位制表示的数值应视为标准。本标准中不包括其他计量单位。 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）。本标准的使用者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。 1.4 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。 ====意义和用途====== 4.1 该试验方法提供了一种评估缓蚀混凝土外加剂的方法。 4.2 该试验方法有助于开发外加剂，以减少混凝土中钢筋的腐蚀。 4.3 如果将掺合料样品与不含掺合料的对照进行比较，则该试验方法可用于确定掺合料对钢筋的腐蚀性。 4.4 良好的性能，即在本试验中，相对于单独的氯化物，腐蚀速率至少降低了一个数量级，这有力地表明混合物是一种缓蚀剂。 然而，性能差需要进行额外的测试，以确定外加剂是否能提高耐腐蚀性。 4.5 该试验方法不得用于预测现场性能。 4.6 过滤过程使得该测试不适合于乳液的评估。

1.1 This test method covers a procedure for determining the effects of chemical admixtures on the corrosion of metals in concrete. This test method can be used to evaluate materials intended to inhibit chloride-induced corrosion of steel in concrete. It can also be used to evaluate the corrosivity of admixtures by themselves or in a chloride environment. This test is not applicable for emulsions. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. 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 ====== 4.1 This test method provides a means for assessing corrosion-inhibiting concrete admixtures. 4.2 This test method is useful for development of admixtures intended to reduce corrosion of reinforcing steel in concrete. 4.3 This test method is useful in determining the corrosivity of admixtures toward steel reinforcing if the admixture sample is compared to a control without admixtures. 4.4 Good performance, a reduction in corrosion rate versus chloride alone by at least one order of magnitude in this test, is a strong indication that an admixture is a corrosion inhibitor. However, poor performance requires additional testing to determine if the admixture improves corrosion resistance. 4.5 This test method shall not be used to predict performance in the field. 4.6 The filtering process makes this test not suitable for the evaluation of emulsions.