1.1 本规程包括在安装弹性地板材料之前，代替产品制造商的书面指示，确定基材表面是否为多孔或非多孔。 1.2 尽管地砖、地毯、木地板、涂层、薄膜、油漆、自流平和镘刀级底层、底漆和其他相关产品并非专门用于弹性地板覆盖物类别，但本规程中包含的程序可能有助于评估接收此类材料的基底吸水率。 1.3 以英寸-磅单位表示的值应视为标准值。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准值。 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。 第节中给出了一些具体的危害说明 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《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====== 5.1 基材表面容易吸水的能力是决定如何正确安装多种类型的地板粘合剂、底漆、自流平底层和其他产品的关键指标。一些地板行业出版物，如CRI的《地毯安装标准》、RFCI的《全粘合均质薄板地板的推荐安装规程》，以及大多数地板、粘合剂、底漆、，和底层制造商在其应用说明中参考基材表面孔隙率标准，因为这直接影响直接应用材料的扩散率、打开时间和其他关键安装因素。 5.2 在低位或非低位安装地板产品- 吸收性（有时被称为“无孔”）基材，如密实的机器抹平混凝土、成熟且水化良好的混凝土、现有弹性地板、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 使用本规程对基材吸水率（孔隙率）进行定性评估，以及该基材是否应视为多孔/吸收性或非多孔/非吸收性，因为这些术语与弹性地板覆盖物、粘合剂、自流平底层、底漆和其他产品的安装相关。本规程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出版的制造商关于基材吸水率（孔隙率）测定及其影响（如有）的文献，基板制备要求和各自材料的安装。 5.4 在后续安装之前，如果基底有立即吸收的迹象、呈白垩色或多尘，或具有不同程度的吸收，则可能需要底漆或其他额外的表面处理。 5.5 无吸收迹象的基材可能表明存在可能对正确粘附产生负面影响的污染物。在这种情况下，强烈建议按照特定制造商制定的指南进行粘结试验。 5.6 水滴的大小、形状和颜色可能表明存在污染物或其他特殊情况，可能需要与待安装的盖板制造商进行讨论。 5.7 随着材料的强度和密度不断增加，一些表面（如混凝土）会随着时间的推移变得更致密、更不多孔/更不易吸收。 所获得的结果仅反映了测试时间和地点的基底条件。

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).