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ASTM D 6432 : 2019

Current
Current

The latest, up-to-date edition.

Standard Guide for Using the Surface Ground Penetrating Radar Method for Subsurface Investigation
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

12-01-2019

1.1Purpose and Application:

1.1.1This guide covers the equipment, field procedures, and interpretation methods for the assessment of subsurface materials using the Ground Penetrating Radar (GPR) Method. GPR is most often employed as a technique that uses high-frequency electromagnetic (EM) waves (from 10 to 7000 MHz) to acquire subsurface information. GPR detects changes in EM properties (dielectric permittivity, conductivity, and magnetic permeability), that in a geologic setting, are a function of soil and rock material, water content, and bulk density. Data are normally acquired using antennas placed on the ground surface or in boreholes. The transmitting antenna radiates EM waves that propagate in the subsurface and reflect from boundaries at which there are EM property contrasts. The receiving GPR antenna records the reflected waves over a selectable time range. The depths to the reflecting interfaces are calculated from the arrival times in the GPR data if the EM propagation velocity in the subsurface can be estimated or measured.

1.1.2GPR measurements as described in this guide are used in geologic, engineering, hydrologic, and environmental applications. The GPR method is used to map geologic conditions that include depth to bedrock, depth to the water table (Wright et al (1)2), depth and thickness of soil strata on land and under fresh water bodies (Beres and Haeni (2)), and the location of subsurface cavities and fractures in bedrock (Ulriksen (3) and Imse and Levine (4)). Other applications include the location of objects such as pipes, drums, tanks, cables, and boulders, mapping landfill and trench boundaries (Benson et al (5)), mapping contaminants (Cosgrave et al (6); Brewster and Annan (7); Daniels et al (8)), conducting archaeological (Vaughan (9)) and forensic investigations (Davenport et al (10)), inspection of brick, masonry, and concrete structures, roads and railroad trackbed studies (Ulriksen (3)), and highway bridge scour studies (Placzek and Haeni (11)). Additional applications and case studies can be found in the various Proceedings of the International Conferences on Ground Penetrating Radar (Lucius et al (12); Hannien and Autio, (13), Redman, (14); Sato, (15); Plumb (16)), various Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems (Environmental and Engineering Geophysical Society, 1988–2019), and The Ground Penetrating Radar Workshop (Pilon (17)), EPA (18), Daniels (19), and Jol (20) provide overviews of the GPR method.

1.2Limitations:

1.2.1This guide provides an overview of the GPR method. It does not address details of the theory, field procedures, or interpretation of the data. References are included for that purpose and are considered an essential part of this guide. It is recommended that the user of the GPR method be familiar with the relevant material within this guide and the references cited in the text and with Guides D420, D5730, D5753, D6429, and D6235.

1.2.2This guide is limited to the commonly used approach to GPR measurements from the ground surface. The method can be adapted for a number of special uses on ice (Haeni et al (21); Wright et al (22)), within or between boreholes (Lane et al (23); Lane et al (24)), on water (Haeni (25)), and airborne (Arcone et al (25)) applications. A discussion of these other adaptations of GPR measurements is not included in this guide.

1.2.3The approaches suggested in this guide for using GPR are the most commonly used, widely accepted, and proven; however, other approaches or modifications to using GPR that are technically sound may be substituted if technically justified and documented.

1.3Units—The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard.

1.4This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process.

1.5This 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.

1.5.1It is the responsibility of the user of this standard to follow any precautions in the equipment manufacturer's recommendations and to establish appropriate health and safety practices.

1.5.2If this standard is used at sites with hazardous materials, operations, or equipment, it is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of any regulations prior to use.

1.6This 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.

Committee
D 18
DocumentType
Guide
Pages
19
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

ASTM D 5092/D5092M : 2016 Standard Practice for Design and Installation of Groundwater Monitoring Wells
ASTM D 420 : 2018 Standard Guide for Site Characterization for Engineering Design and Construction Purposes
ASTM D 7128 : 2018 Standard Guide for Using the Seismic-Reflection Method for Shallow Subsurface Investigation
ASTM D 4748 : 2010 : R2015 Standard Test Method for Determining the Thickness of Bound Pavement Layers Using Short-Pulse Radar

ASTM D 653 : 2007 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 3740 : 2023 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 3740 : 2019 Standard Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
ASTM D 6429 : 1999 : R2011 : EDT 1 Standard Guide for Selecting Surface Geophysical Methods (Withdrawn 2020)
ASTM D 6429 : 2020 Standard Guide for Selecting Surface Geophysical Methods
ASTM D 653 : 2022 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2020 : EDT 1 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 : REV A Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 653 : 2021 : REV B Standard Terminology Relating to Soil, Rock, and Contained Fluids
ASTM D 6429 : 2023 Standard Guide for Selecting Surface Geophysical Methods

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