1.1 本试验方法包括测定弹性地砖/板材产品在暴露于高温并重新调节至环境温度后的线性尺寸变化。 1.2 该测试方法还可以测量试样受热并重新调节至环境温度后可能发生的卷曲。 1.3 以英寸-磅为单位的数值应视为标准值。括号中给出的值是到国际单位制的数学转换，仅供参考，不被视为标准值。 1.4 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。 1.5 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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 安装地板的最终外观取决于几个因素。 这些包括但不限于瓷砖/木板的尺寸和垂直度、接缝切割质量、底层地板的质量和准备以及安装人员的技能。安装地板的长期外观也取决于但不限于瓷砖/木板抵抗内应力消除引起的收缩的能力。本试验方法用于测量地板在受热后保持其原始尺寸的能力，模拟在合理和预期温度下的长期使用寿命。

1.1 This test method covers the determination of the change in linear dimensions of resilient floor tile/plank products after exposure to heat and reconditioning to ambient temperature. 1.2 This test method allows one to also measure curling that can occur after a specimen has been exposed to heat and reconditioned back to ambient temperature. 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. 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 The final appearance of an installed floor depends upon several factors. These include but are not limited to size and squareness in the case of tiles/planks, the quality of joint cut, the quality and preparation of the subfloor and the skill of the installer. Long term appearance of the installed floor is also dependent on but not limited to the ability of the tile/plank to resist shrinkage due to internal stress relief. This test method is used to measure the ability of the floor to retain its original dimensions following exposure to heat, simulating a long service life at reasonable and expected temperatures.