ASTM D4748 - 10(2020)

    Standard Test Method for Determining the Thickness of Bound Pavement Layers Using Short-Pulse Radar

    Active Standard ASTM D4748 | Developed by Subcommittee: E17.41

    Book of Standards Volume: 04.03

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    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.

    1. Scope

    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.

    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D6087 Test Method for Evaluating Asphalt-Covered Concrete Bridge Decks Using Ground Penetrating Radar

    D6429 Guide for Selecting Surface Geophysical Methods

    D6432 Guide for Using the Surface Ground Penetrating Radar Method for Subsurface Investigation

    E1778 Terminology Relating to Pavement Distress

    ICS Code

    ICS Number Code 93.080.20 (Road construction materials)

    UNSPSC Code

    UNSPSC Code 41113809(Ground penetrating radar); 30120000(Roads and landscape)

    Referencing This Standard
    Link Here
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    DOI: 10.1520/D4748-10R20

    Citation Format

    ASTM D4748-10(2020), Standard Test Method for Determining the Thickness of Bound Pavement Layers Using Short-Pulse Radar, ASTM International, West Conshohocken, PA, 2020,

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