ASTM D7759/D7759M-14

Standard Guide for Nuclear Surface Moisture and Density Gauge Calibration

SIGNIFICANCE AND USE
5.1 Gauge calibration is performed for the following purposes:  
5.1.1 To formulate a mathematical equation, or density calibration equation, that relates the gauge density system response (the “density count”) to the soil-equivalent density of the standard on which this response is elicited.  
5.1.2 To formulate a mathematical equation, or water content calibration equation, that relates the gauge water content system response (the “water content count”) to the water mass per unit volume value of the standard on which this response is elicited.  
5.1.3 To ensure that the gauge has an in-place water mass per unit volume gauge precision level that is consistent with typical gauge response.  
5.2 Gauge verification is performed for the following purposes:  
5.2.1 To indicate to the party or agency performing the verification when the mathematical relationship between the in-place density reading indicated by the gauge and the corresponding gauge density test count needs to be adjusted so that the gauge calibration meets the required level of measurement uncertainty.  
5.2.2 To indicate to the party or agency performing the verification when the mathematical relationship between the water mass per unit volume indicated by the gauge and the corresponding gauge water content test count needs to be adjusted so that the gauge calibration meets the required level of measurement uncertainty.  
5.2.3 Gauge verification and calibration require specialized training and equipment. Gauge calibration and verification should only be conducted by those trained in the proper operation of the gauge, the calibration or verification standards, and any tables, charts, graphs, or computer programs required for the proper execution of these operations.
Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 a...
SCOPE
1.1 This guide describes the process and objective of calibrating the density system of a nuclear surface moisture and density gauge, or formulating the mathematical relationship between the density system response (the “density count”) of a nuclear surface moisture and density gauge and the corresponding density value of the density standard upon which the density system response was observed.  
1.2 This guide describes the process and objective of calibrating the water content system of a nuclear surface moisture and density gauge, or formulating the mathematical relationship between the water content system response (the “water content count”) of a nuclear surface moisture and density gauge and the corresponding water mass per unit volume value of the water content standard upon which the water content system response was observed.  
1.3 This guide describes the process and objective of verifying the density system of a nuclear surface moisture and density gauge.  
1.4 This guide describes the process and objective of verifying the water content system of a nuclear surface moisture and density gauge.  
1.5 This guide describes two mathematical processes by which the gauge measurement precision may be computed or measured.  
1.6 This guide offers guidance for developing and reporting estimates of uncertainties in measurements made with gauges that have undergone calibration or verification.  
1.7 All observed and calculated values shall confirm to the guide for significant digits and rounding established in Practice D6026.  
1.8 Units—The values stated in either SI units or inch pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.9 This guide does not purport to address all of the safety conce...

General Information

• Status: Historical
• Publication Date: 31-May-2014
• ICS: 17.040.30 - Measuring instruments
• Technical Committee: D18 - Soil and Rock
• Drafting Committee: D18.08 - Special and Construction Control Tests

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7759/D7759M − 14
Standard Guide for
1
Nuclear Surface Moisture and Density Gauge Calibration
This standard is issued under the fixed designation D7759/D7759M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* ing values from the two systems may result in non-
conformance with the standard.
1.1 This guide describes the process and objective of
1.9 This guide does not purport to address all of the safety
calibratingthedensitysystemofanuclearsurfacemoistureand
concerns, if any, associated with its use. It is the responsibility
density gauge, or formulating the mathematical relationship
of the user of this guide to establish appropriate safety and
between the density system response (the “density count”) of a
health practices and determine the applicability of regulatory
nuclear surface moisture and density gauge and the corre-
limitations prior to use.
sponding density value of the density standard upon which the
1.10 This guide offers an organized collection of informa-
density system response was observed.
tion or a series of options and does not recommend specific
1.2 This guide describes the process and objective of
course of action. This document cannot replace education or
calibrating the water content system of a nuclear surface
experienceandshouldbeusedinconjunctionwithprofessional
moisture and density gauge, or formulating the mathematical
judgment. Not all aspects of this guide may be applicable in all
relationship between the water content system response (the
circumstances. This ASTM standard is not intended to repre-
“water content count”) of a nuclear surface moisture and
sent or replace the standard of care by which the adequacy of
density gauge and the corresponding water mass per unit
a given professional service must be judged, nor should this
volume value of the water content standard upon which the
document be applied without consideration of a project’s many
water content system response was observed.
unique aspects. The word “Standard” in the title of this
1.3 This guide describes the process and objective of
document means only that the document has been approved
verifying the density system of a nuclear surface moisture and
through the ASTM consensus process.
density gauge.
2. Referenced Documents
1.4 This guide describes the process and objective of
2
2.1 ASTM Standards:
verifying the water content system of a nuclear surface
D653 Terminology Relating to Soil, Rock, and Contained
moisture and density gauge.
Fluids
1.5 This guide describes two mathematical processes by
D2216 Test Methods for Laboratory Determination of Water
which the gauge measurement precision may be computed or
(Moisture) Content of Soil and Rock by Mass
measured.
D3740 Practice for Minimum Requirements for Agencies
1.6 This guide offers guidance for developing and reporting Engaged in Testing and/or Inspection of Soil and Rock as
estimates of uncertainties in measurements made with gauges
Used in Engineering Design and Construction
that have undergone calibration or verification. D6026 Practice for Using Significant Digits in Geotechnical
Data
1.7 All observed and calculated values shall confirm to the
D6938 Test Method for In-Place Density and Water Content
guide for significant digits and rounding established in Practice
of Soil and Soil-Aggregate by Nuclear Methods (Shallow
D6026.
Depth)
1.8 Units—ThevaluesstatedineitherSIunitsorinchpound
D7013 Guide for Nuclear Surface Moisture and Density
units are to be regarded separately as standard. The values
Gauge Calibration Facility Setup
stated in each system may not be exact equivalents; therefore,
3. Terminology
each system shall be used independently of the other. Combin-
3.1 Definitions—See Terminology D653 for general defini-
tions.
1
This practice is under the jurisdiction of ASTM Committee D18 on Soil and
Rock and is the direct responsibility of Subcommittee D18.08 on Special and
2
Construction Control Tests. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
CurrenteditionapprovedJune1,2014.PublishedJuly2014.Originallyapproved contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
in 2012. Last previous edition approved in 2012 as D7759–12a. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D7759-14. the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7759 − 12a D7759/D7759M − 14
Standard Guide for
1
Nuclear Surface Moisture and Density Gauge Calibration
This standard is issued under the fixed designation D7759;D7759/D7759M; the number immediately following the designation indicates
the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This guide describes the process and objective of calibrating the density system of a nuclear surface moisture and density
gauge, or formulating the mathematical relationship between the density system response (the “density count”) of a nuclear surface
moisture and density gauge and the corresponding density value of the density standard upon which the density system response
was observed.
1.2 This guide describes the process and objective of calibrating the water content system of a nuclear surface moisture and
density gauge, or formulating the mathematical relationship between the water content system response (the “water content count”)
of a nuclear surface moisture and density gauge and the corresponding water mass per unit volume value of the water content
standard upon which the water content system response was observed.
1.3 This guide describes the process and objective of verifying the density system of a nuclear surface moisture and density
gauge.
1.4 This guide describes the process and objective of verifying the water content system of a nuclear surface moisture and
density gauge.
1.5 This guide describes two mathematical processes by which the gauge measurement precision may be computed or
measured.
1.6 This guide offers guidance for developing and reporting estimates of uncertainties in measurements made with gauges that
have undergone calibration or verification.
1.7 All observed and calculated values shall confirm to the guide for significant digits and rounding established in Practice
D6026.
1.8 Units—The values stated in either SI units or inch pound units are to be regarded separately as standard. The values stated
in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values
from the two systems may result in non-conformance with the standard.
1.9 This guide 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 guide to establish appropriate safety and health practices and determine the applicability of regulatory limitations
prior to use.
1.10 This guide offers an organized collection of information or a series of options and does not recommend 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D2216 Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass
1
This practice is under the jurisdiction of ASTM Committee D18 on Soil and Rock and is the direct responsibility of Subcommittee D18.08 on Special and Construction
Control Tests.
Current edition approved Nov. 1, 2012June 1, 2014. Published December 2012July 2014. Originally approved in 2012. Last previous edition approved in 2012 as
D7759–12.–12a. DOI: 10.1520/D7759-12a.10.1520/D7759-14.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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D7759/D7759M − 14
D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as U
...