ASTM D 7971 : 2015
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Guide for Measuring Roundness of Glass Spheres Using a Flowing Stream Digital Image Analyzer
Hardcopy , PDF
08-08-2020
English
01-04-2015
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 06.02, 2018 Defines the determination of the roundness of glass spheres used in pavement marking systems using a flowing stream digital analyzer.
| Committee |
D 01
|
| DocumentType |
Guide
|
| Pages |
4
|
| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
|
| SupersededBy |
1.1This guide covers the determination of the roundness of glass spheres used in pavement marking systems using a flowing stream digital analyzer. Typical gradations for pavement marking systems are defined in ranges from Type 0 through 5 in AASHTO M247.
1.2This guide provides for the presentation of roundness data in a variety of formats to the requirement of the agency pavement marking material specification. For most specifications the standard format is to present the roundness data as Percent True Spheres relative to a series of standard ASTM sieve sizes.
1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4This 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.
| ASTM B 215 : 2015 : REDLINE | Standard Practices for Sampling Metal Powders |
| ISO 13322-1:2014 | Particle size analysis — Image analysis methods — Part 1: Static image analysis methods |
| AASHTO M 247 : 2013 | SPECIFICATION FOR GLASS BEADS USED IN PAVEMENT MARKINGS |
| ISO 9276-6:2008 | Representation of results of particle size analysis — Part 6: Descriptive and quantitative representation of particle shape and morphology |
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