1.1 本试验方法包括使用探地雷达（GPR）无损测定粘结路面层的厚度。 1.2 本试验方法可能不适用于由于电磁信号衰减增加而表现出导电性增加的路面。可能导致这种情况的示例包括:如果存在游离电解质，则路面极潮湿或潮湿（饱和），以及含铁量高的矿渣骨料。 1.3 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 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。 第节给出了具体的危险说明 11 . 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====== 6.1 本试验方法允许准确、无损地测定结合路面层的厚度。因此，该试验方法广泛适用于路面系统评估技术。 6.2 虽然该测试方法在适当的条件下可以作为层厚指示器高度准确，但只有经验丰富的数据分析师才能对接收到的雷达信号进行一致可靠的解释，以确定层厚。 这种经验可以通过使用该系统以及各种设备制造商或咨询公司提供的培训课程获得。或者，操作员可能希望使用计算机软件自动跟踪层边界和层厚度（如适用）。

1.1 This test method covers the nondestructive determination of the thickness of bound pavement layers using ground penetrating radar (GPR). 1.2 This test method may not be suitable for application to pavements which exhibit increased conductivity due to the increased attenuation of the electromagnetic signal. Examples of scenarios which may cause this are: extremely moist or wet (saturated) pavements if free electrolytes are present and slag aggregate with high iron content. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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. Specific hazard statements are given in Section 11 . 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 ====== 6.1 This test method permits accurate and nondestructive thickness determination of bound pavement layers. As such, this test method is widely applicable as a pavement system-assessment technique. 6.2 Although this test method, under the right conditions, can be highly accurate as a layer-thickness indicator, consistently reliable interpretation of the received radar signal to determine layer thicknesses can be performed only by an experienced data analyst. Such experience can be gained through use of the system and through training courses supplied by various equipment manufacturers or consulting companies. Alternatively, the operator may wish to use computer software to automatically track the layer boundaries and layer thickness, where applicable.