1.1 本试验方法包括从地面以下、地面上和地面以上（悬挂式）裸露混凝土地板排放的湿气速率的定量测定。 1.2 本试验不应用于评估石膏混凝土或含有轻质骨料的地板散发的湿气率。 1.3 本试验不得用于评估混凝土涂层、反应渗透剂或修补或找平化合物的湿气排放。 1.4 该水分量应表示为湿气排放率，以1000英尺以上的水分磅为单位进行测量 2. 24小时内的区域- h周期。 1.5 以英寸-磅为单位的数值应视为标准。括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.6 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。 1.7 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 使用此测试方法获得一个定量值，该值指示混凝土地板表面的湿气排放速率，以及该地板是否可接受弹性地板覆盖物。湿气排放率仅反映试验时混凝土地板的状况。所有混凝土底层地板都会以蒸汽的形式释放出一定量的水分。混凝土水分的释放是由环境条件驱动的自然过程。所有地板覆盖物都容易因过量的湿气排放而失效。混凝土板散发出的湿气以磅为单位。 该测量值是从1000英尺处蒸发的水的当量 2. 混凝土表面在24小时内。氯化钙水分测试一直是进行这种测定的行业标准，是一种实用、成熟和可接受的动态水分测试。它将产生直接适用于地板制造商规范的量化结果。所获得的结果反映了测试时混凝土地板表面的状况，可能不会表明未来的状况。

1.1 This test method covers the quantitative determination of the rate of moisture vapor emitted from below-grade, on-grade, and above-grade (suspended) bare concrete floors. 1.2 This test shall not be used to evaluate the rate of moisture vapor emitted by gypsum concrete or floors containing lightweight aggregate. 1.3 This test shall not be used to evaluate moisture vapor emissions over coatings on concrete or through reactive penetrants or over patching or leveling compounds. 1.4 This quantity of moisture shall be expressed as the rate of moisture vapor emission, measured in pounds of moisture over a 1000 ft 2 area during a 24-h period. 1.5 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. 1.6 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. 1.7 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 Use this test method to obtain a quantitative value indicating the rate of moisture vapor emission from the surface of a concrete floor and whether or not that floor is acceptable to receive resilient floor covering. The moisture vapor emission rate only reflects the condition of the concrete floor at the time of the test. All concrete subfloors emit some amount of moisture in vapor form. Concrete moisture emission is a natural process driven by environmental conditions. All floor coverings are susceptible to failure from excessive moisture vapor emissions. The moisture vapor emitted from a concrete slab is measured in pounds. This measurement is the equivalent weight of water evaporating from 1000 ft 2 of concrete surface in a 24-h period. The calcium chloride moisture test has been the industry standard for making this determination and is a practical, well-established and accepted test of dynamic moisture. It will produce quantified results directly applicable to flooring manufacturer's specifications. The results obtained reflect the condition of the concrete floor surface at the time of testing and may not indicate future conditions.