1.1 本试验方法包括道路型基底上的样品制备和热塑性路面标记材料的试验方法，类似于试验方法中列出的“加德纳冲击”方法 D5420型 . 1.2 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。 1.3 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。 1.4 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 本试验的意义在于确定热塑性路面标线材料在实验室条件下对模拟路面基层的抗冲击性，并用合格/不合格或数值表示。测试结果可用于质量测试或区分标记材料。 5.2 任何试图执行此测试的人都应首先审查测试方法 D5420型 和 第2794页 ，特别是设备设置。 5.3 应严格遵守样品制备和设备设置，以尽量减少测试结果的可变性。

1.1 This test method covers the sample preparation over a road-type substrate and test methodology of thermoplastic pavement marking materials similar to the “Gardner Impact” method as listed in Test Method D5420 . 1.2 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. 1.3 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. 1.4 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 significance of this test is to determine the thermoplastic pavement marking material’s resistance to impact over a simulated pavement substrate, under laboratory conditions, and is expressed as pass/fail or numerically. The test result can be used as a quality test or to differentiate marking materials. 5.2 Anyone attempting to perform this test should initially review Test Methods D5420 and D2794 , specifically the equipment setup. 5.3 Sample preparation and equipment set-up should be followed precisely to minimize variability in the test result.