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AS/NZS 2891.14.4:2013

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AS/NZS 2891.14.4:2013

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Methods of sampling and testing asphalt, Method 14.4: Field density tests — Calibration of nuclear surface moisture-density gauge — Backscatter mode

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This Standard sets out the method for the calibration of the density system of a nuclear surface moisture-density gauge, using standard blocks, when operated in the backscatter mode. The calibration equation, so derived, defines the relationship between the density count ratio and field density. An adjustment to the calibration equation is determined for each material tested from measurements of field density tested in accordance with AS/NZS 2891.14.1.2.

Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Safety precautions
4 Apparatus
4.1 Nuclear surface moisture-density gauge
4.2 A set of standard density blocks, Type A or C
4.3 Radiation monitoring apparatus and personal radiation monitors
5 Procedure
5.1 Preparation for calibration
5.2 Gauge function check
5.3 Standard count check
5.4 Determination of density calibration data
6 Calculations
6.1 Density data
6.2 Density calibration constants
6.3 Calculation of uncertainty of the calibration
7 Gauge microprocessor validation
8 Recalibration
9 Calibration report

Cited references in this standard
Content history
DR AS/NZS 2891.14.4

Please select a variation to view its description.

Published

22/07/2013
Pages

4

Please select a variation to view its pdf.

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AS/NZS 2891.14.4:2013
$63.00