1.1 本试验方法涵盖了干铸分段挡土墙（SRW）单元的抗冻融性（见规范 C1372 )以及相关的混凝土单元。根据装置在实际使用中的预期用途，在饮用自来水或3%盐水的测试溶液中对装置进行测试。 注1: 相关混凝土单元包括空心和实心混凝土砌块、混凝土砖和混凝土屋顶摊铺机等单元。 1.2 本标准的文本是指提供解释性材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应被视为本标准的要求。 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值可能不是完全相等的；因此，每个系统应独立使用。组合两个系统的值可能导致- 符合本标准。有些数值只有国际单位制，因为实际中没有使用英寸磅当量。 1.4 本标准并不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。 1.5 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 本试验方法中描述的程序旨在确定在饮用自来水或盐水存在的情况下冷冻和解冻对SRW和相关装置的影响。 4.2 该程序并非旨在提供定量措施来确定特定类型混凝土单元的预期使用年限。 注2: 执行此测试方法的测试实验室应根据实践进行评估 C1093 .

1.1 This test method covers the resistance to freezing and thawing of dry-cast segmental retaining wall (SRW) units (see Specification C1372 ) and related concrete units. Units are tested in a test solution that is either potable tap water or 3 % saline solution depending on the intended use of the units in actual service. Note 1: Related concrete units include units such as hollow and solid concrete masonry units, concrete brick, and concrete roof pavers. 1.2 The text of this standard refers to 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. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with this standard. Some values have only SI units because the inch-pound equivalents are not used in practice. 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 procedure described in this test method is intended to determine the effects of freezing and thawing on SRW and related units in the presence of potable tap water or saline solution. 4.2 The procedure is not intended to provide a quantitative measure to determine an expected length of service for a specific type of concrete unit. Note 2: The testing laboratory performing this test method should be evaluated in accordance with Practice C1093 .