1.1 本试验方法涵盖了一个标准化的实验室程序，用于通过砌体砂浆的毛细吸收（芯吸）特性确定相对吸水率。本试验方法不适用于测定防水涂层的有效性。 1.2 本标准文本指提供说明材料的注释和脚注。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。 1.3 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.3.1 英寸-磅单位在括号中给出，用于温度规格，仅供参考。 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建立适当的安全、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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 4.1 本试验方法提供了一个实验室程序，用于确定砌体结构所用砂浆随时间的相对吸水性能。 由于试样是在实验室条件下制作的，没有考虑砌体基底或现场混合程序的影响，因此该方法不适用于现场使用。该试验方法产生的数据可用于确定防水外加剂的相对有效性或其他外加剂或砂浆组分对砂浆防水性的影响。但是，在解释结果时要谨慎。虽然砌体的抗渗水性可能与砂浆的吸水性有关，但也取决于其他因素，如工艺、粘结程度以及砌块和砂浆的性能。 注1: 规范中规定了该试验方法 第1384页 用于证明防水砂浆外加剂的合规性。在该符合性试验中，将混合砂浆与使用相同砂浆材料制成的参考砂浆进行比较，但不包括外加剂。对于防水预混干砂浆混合料的质量控制测试，参考砂浆通常不可用，因为在最终产品装袋前的制造过程中添加了防水添加剂。在这些情况下 附件A1 可用于测定砂浆对毛细吸收的相对阻力。

1.1 This test method covers a standardized laboratory procedure for determining the relative water absorption by capillary uptake (wicking) characteristics of masonry mortars. This test method is not applicable for determining the effectiveness of water repellent coatings. 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 SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Inch-pound units are given in parentheses for temperature specification and are for information only. 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 This test method provides a laboratory procedure for determining the relative water absorption properties over time of mortars used for masonry construction. Because the specimens are made under laboratory conditions and do not take into account the effect of the masonry substrate or field mixing procedures, this method is not intended for field use. Data generated from this test method may be useful for determining the relative effectiveness of water repellent admixtures or the effect of other admixtures or mortar components on the water repellency of a mortar. However, use caution in interpreting the results. While the resistance of masonry to water penetration may be related to the water absorption of the mortar, it also depends on other factors, such as the workmanship, extent of bond, and the properties of the masonry units and mortar. Note 1: This test method is specified in Specification C1384 for demonstrating compliance of mortar admixtures classified as Water Repellent. In this compliance testing, the admixed mortar is compared to a reference mortar made with the same mortar materials except that it does not include the admixture. For quality control testing of water repellent preblended dry mortar mixes, the reference mortar is not typically available since the water repellent additive is added during the manufacturing process prior to bagging the final product. In these cases, the procedure in Annex A1 can be used to determine the relative resistance of the mortar to absorption by capillary uptake.