1.1 本试验方法描述了一种实验室测量地板覆盖物在降低标准攻丝机通过混凝土地板产生的冲击噪声方面的有效性的方法。测试结果不一定与地板覆盖物的主观评估直接相关。 1.2 本试验方法适用于安装在标准混凝土地板上的所有地板覆盖物，无论是单层还是多层。多层覆盖物可在工厂组装或在测试实验室组装。 1.3 试验方法仅适用于实验室测量。它不适用于现场情况下地板覆盖物有效性的测量。 1.4 实验室认证- 方法中给出了认证实验室执行本试验方法的程序 E492 . 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户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。 1.6 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 地板总成的冲击声额定值由基本地板总成和上表面的地板覆盖物决定。相同的地板覆盖物与不同的基本地板组件组合在一起，并不总是具有相同的冲击绝缘等级（IIC）。本试验方法旨在提供安装在混凝土板地板上时地板覆盖物单独特征的数据。 5.2 计算的ΔIIC额定值 13.4 用于比较混凝土地板上不同地板覆盖物的有效性。 5.3 为带覆盖层的参考混凝土地板计算的冲击隔声等级（IIC）表明了覆盖层将为典型的整体混凝土地板提供的冲击隔声。 5.4 当已知裸露混凝土板下方的归一化冲击声压级时，在 13.1 可用于估计冲击声压级，因此，如果盖板安装在板上，将产生IIC。 5.5 警告: 使用该方法测量的差谱不得用于估算仅包含一个或两个轻质地板层（如定向刨花板或胶合板）的地板的冲击声压级。这种估计的冲击声压级将非常不准确。 注1: 计算的差分谱 13.1 当地板被放置在包含直接浇筑在胶合板底层地板或钢桥面板上的混凝土面层（约50 mm厚）的托梁地板上时，对地板覆盖物导致的冲击声压级降低给出了不可靠的估计。 估计的冲击声压级过低。 3. 5.6 本试验方法严格遵循ISO 10140-1（附录H）中所述的试验方法，但使用的单编号额定值是分类中所述的冲击绝缘等级（IIC） E989 . 对标准混凝土楼板的描述也有所不同。 注2: 分类中的要求 E989 参考轮廓以上的偏差不得超过8 dB，这意味着ISO 10140-1（附录H）试验额定值与该方法产生的额定值之间没有简单关系。

1.1 This test method describes a method for the laboratory measurement of the effectiveness of floor coverings in reducing impact noise from a standard tapping machine through concrete floors. The test results are not necessarily directly related to the subjective evaluations of the floor coverings. 1.2 This test method applies to all floor coverings, whether single or multi-layered, as installed on a standard concrete floor. Multi-layered coverings may be factory-assembled or assembled at the test laboratory. 1.3 The test method applies only to laboratory measurements. It does not apply to the measurement of the effectiveness of a floor covering in a field situation. 1.4 Laboratory Accreditation— A procedure for accrediting a laboratory for performing this test method is given in Method E492 . 1.5 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. 1.6 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 impact sound rating for a floor assembly is determined both by the basic floor assembly and the floor covering on the upper surface. The same floor covering in combination with different basic floor assemblies will not always give the same impact insulation class (IIC) ratings. This test method is designed to provide data that characterize the floor covering alone when installed over concrete slab floors. 5.2 The ΔIIC rating calculated in 13.4 is used to compare the effectiveness of different floor coverings on concrete floors. 5.3 The impact insulation class (IIC) calculated for the reference concrete floor with a covering provides an indication of the impact sound insulation that the covering will provide with typical, monolithic concrete floors. 5.4 When the normalized impact sound pressure levels below a bare concrete slab are known, the difference spectrum calculated in 13.1 may be used to estimate the impact sound pressure levels and hence the IIC that would result if the covering were installed on the slab. 5.5 Warning: Difference spectra measured using this method shall not be used to estimate impact sound pressure levels for floors comprising only one or two lightweight floor layers such as oriented strand board or plywood. Such estimated impact sound pressure levels would be very inaccurate. Note 1: The difference spectrum calculated in 13.1 gives unreliable estimates of the reduction in impact sound pressure levels due to the floor covering when it is placed on a joist floor incorporating a concrete topping (about 50 mm thick) poured directly on the plywood subfloor or steel deck. The estimated impact sound pressure levels are too low. 3 5.6 This test method closely follows that described in ISO 10140-1 (Annex H) except that the single number rating used is the impact insulation class (IIC) described in Classification E989 . The description of the standard concrete floor also differs. Note 2: The requirement in Classification E989 that no deviation above the reference contour may exceed 8 dB means that there is no simple relationship between ISO 10140-1 (Annex H) test ratings and those generated by this method.