1.1 本实践涵盖了在安装弹性地板材料之前，代替产品制造商的书面说明，确定基材表面是否被认为是多孔的还是无孔的。 1.2 尽管地毯贴砖、地毯、木地板、涂料、薄膜、油漆、自流平和抹平级垫层、底漆和其他相关产品并不特别旨在包括在弹性地板覆盖物的类别中，但本实践中包括的程序可用于评估基材接收此类材料的基材吸水率。 1.3 以英寸-磅单位表示的值应被视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。1.4 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。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法规限制的适用性。 章节中给出了一些具体的危害陈述 6 关于危险。 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》中确立的国际公认的标准化原则制定的。 ======意义和用途====== 5.1 基材表面容易吸收水分的能力是确定如何正确安装多种类型的地板粘合剂、底漆、自粘材料的关键指标。找平垫层和其他产品。一些地板行业出版物，如CRI的地毯安装标准、RFCI的全粘均质板材地板的推荐安装实践，以及大多数地板、粘合剂、底漆和衬垫制造商在其应用说明中参考了基材表面孔隙率标准，因为这直接影响直接应用材料的铺展速度、开放时间和其他关键安装因素。 5.2 在低吸收性或非吸收性（有时称为“无孔”）基材上安装地板产品，如密集的机器抹平混凝土、成熟且水合良好的混凝土、现有的弹性地板、聚合物水磨石等，可能需要调整表面处理方法或产品选择，以确保成功安装。5.3 使用本实践获得基底吸水率（孔隙率）的定性评估，以及该基底是否应被视为多孔/吸收性或无孔/非吸收性，因为这些术语与弹性地板覆盖物、粘合剂、自流平垫层、底漆和其他产品的安装有关。该实践将产生直接适用于根据制造商规范确定适当表面处理要求的结果，但绝不意味着取代已发表的制造商关于确定基底吸水率（孔隙率）及其对基底处理要求和其各自材料的安装的影响（如果有的话）的已发表文献。 5.4 表现出立即吸收、呈白垩状或多尘状或具有不同吸收程度的基材可能需要在后续安装之前涂底漆或其他额外的表面处理。5.5 没有吸收的基材可能表明存在可能对适当粘附产生负面影响的污染物。在这种情况下，强烈建议根据特定制造商的既定指南进行粘合测试。 5.6 水滴的大小、形状和颜色可以指示污染物的存在或其他特殊情况，这可能需要与要安装的平板覆盖物的制造商讨论。 5.7 随着时间的推移，随着材料继续获得强度和致密化，一些表面（如混凝土）会变得更致密、多孔性更小/吸收性更差。所获得的结果仅反映了测试时间和位置处的基底条件。

1.1 This practice covers the determination of whether or not a substrate surface, in lieu of written instruction from a product manufacturer, is considered porous or non-porous prior to the installation of resilient flooring materials. 1.2 Although carpet tiles, carpet, wood flooring, coatings, films, paints, self-leveling and trowel-grade underlayments, primers, and other associated products are not specifically intended to be included in the category of resilient floor coverings, the procedures included in this practice may be useful for assessing the substrate water absorption for substrates to receive such materials. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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. Some specific hazards statements are given in Section 6 on Hazards. 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 ====== 5.1 The ability of a substrate surface to readily absorb water is a key indicator in determining how to correctly install many types of flooring adhesives, primers, self-leveling underlayments, and other products. Several flooring industry publications such as CRI’s Carpet Installation Standard, RFCI’s Recommended Installation Practice for Homogenous Sheet Flooring, Fully-Adhered, as well as most flooring, adhesive, primer, and underlayment manufacturers reference substrate surface porosity criteria in their application instructions since this directly impacts the spread rate of directly applied material, the open time, and other critical installation factors. 5.2 Installing flooring products over low or non-absorptive (sometimes referred to as “non-porous”) substrates such as densely machine-troweled concrete, mature and well-hydrated concrete, existing resilient flooring, polymer terrazzo and others may require adjustments to the surface preparation method or product selection to ensure a successful installation. 5.3 Use this practice to obtain a qualitative assessment of substrate water absorption (porosity) and whether or not that substrate should be regarded as porous/absorptive or non-porous/non-absorptive as these terms relate to the installation of resilient floor coverings, adhesives, self-leveling underlayments, primers, and other products. This practice will produce results directly applicable to determining appropriate surface preparation requirements in accordance with manufacturer’s specifications, but it is in no way meant to replace published manufacturer’s literature regarding the determination of substrate water absorption (porosity) and the impact such has, if any, on substrate preparation requirements and on the installation of their respective materials. 5.4 Substrates that evidence immediate absorption, are chalky or dusty, or have varying degrees of absorption may require priming or other additional surface preparation prior to subsequent installations. 5.5 Substrates that evidence no absorption may indicate the presence of a contaminant that may negatively impact proper adhesion. In such cases, bond tests performed in accordance with the particular manufacturer’s established guidelines are strongly recommended. 5.6 The size, shape, and color of the water drop may indicate the presence of contaminants or other special circumstances that may require discussion with the manufacturer of the slab covering to be installed. 5.7 Some surfaces such as concrete can become denser and less porous/less absorptive over time as the material continues to gain strength and densify. The results obtained reflect only the conditions of the substrate at the time and location of the test(s).