ASTM-D4748 Standard Test Method for Determining the Thickness of Bound Pavement Layers Using Short-Pulse Radar

ASTM-D4748 - 2010 R15 EDITION - CURRENT
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Standard Test Method for Determining the Thickness of Bound Pavement Layers Using Short-Pulse Radar
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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 and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Section 11.

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.

Keywords

GPR; ground penetrating radar; layer thickness; pavement thickness; radar;; ICS Number Code 93.080.20 (Road construction materials)

To find similar documents by ASTM Volume:

04.03 (Road and Paving Materials; Vehicle-Pavement Systems)

To find similar documents by classification:

93.080.20 (Road construction materials Including asphalts, road pavements, etc.)

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Document Number

ASTM-D4748-10(2015)

Revision Level

2010 R15 EDITION

Status

Current

Modification Type

Reapproval

Publication Date

June 1, 2015

Document Type

Test Method

Page Count

6 pages

Committee Number

E17.41