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ASTM D4797-12a

(Test Method)

Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic Marking

Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic Marking

SIGNIFICANCE AND USE
5.1 The function of these test methods is to define the percent of binder and retroreflective optics or non-retroreflective particles in the composition of the thermoplastic traffic marking as defined by the applicable specification for the manufacture of a specific thermoplastic traffic marking. The subsequent sample, as a result of ashing can be used to later test for the presence of titanium dioxide, lead chromate and possibly organic pigments.
SCOPE
1.1 These test methods cover procedures for the gravimetric analysis of the binder and hydrochloric Acid (HCL) insoluble particles in white and yellow thermoplastic traffic markings. The HCL insoluble particles can be retroreflective optics, such as glass beads or some other type of retroreflective optic, or non-retroreflective particles such as silica sand, or a combination of any two or more of these materials.  
1.2 This standard does not address the physical separation and the individual quantification of each component when a mixture of two or more HCL insoluble materials is present. Rather it requires the user to visually evaluate the HCL insoluble material (obtained from following this test method) and report the types of materials present.  
1.3 This standard does not purport to address the titanium dioxide or lead chromate pigment measurement (after ashing) which is detailed in Test Methods D1394 and D126.  
1.4 This standard will attempt to address the interference of organic pigments with the binder results.  
1.5 The analytical procedures appear in the following order:    
Sections  
Percent Binder  
10  
Percent Retroreflective Optics or
Non-Retroreflective Particles  
11
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.7 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.

General Information

Status
Historical
Publication Date
31-Oct-2012
ICS
93.080.30 - Road equipment and installations
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.44 - Traffic Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D4797-12 - Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic Marking
Effective Date
01-Nov-2012

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REDLINE ASTM D4797-12a - Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic MarkingREDLINE ASTM D4797-12a - Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic Marking
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REDLINE ASTM D4797-12a - Standard Test Methods for Gravimetric Analysis of White and Yellow Thermoplastic Traffic Marking
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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: D4797 − 12a
Standard Test Methods for
Gravimetric Analysis of White and Yellow Thermoplastic
1
Traffic Marking
This standard is issued under the fixed designation D4797; 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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 These test methods cover procedures for the gravimetric
D126 Test Methods for Analysis of Yellow, Orange, and
analysis of the binder and hydrochloric Acid (HCL) insoluble
Green Pigments Containing Lead Chromate and Chro-
particles in white and yellow thermoplastic traffic markings.
mium Oxide Green
The HCL insoluble particles can be retroreflective optics, such
D1394 Test Methods for Chemical Analysis of White Tita-
as glass beads or some other type of retroreflective optic, or
nium Pigments
non-retroreflective particles such as silica sand, or a combina-
D7307 PracticeforSamplingofThermoplasticTrafficMark-
tion of any two or more of these materials.
ing Materials
1.2 This standard does not address the physical separation D7308 Practice for Sample Preparation of Thermoplastic
and the individual quantification of each component when a Traffic Marking Materials
E177 Practice for Use of the Terms Precision and Bias in
mixture of two or more HCL insoluble materials is present.
ASTM Test Methods
Rather it requires the user to visually evaluate the HCL
E691 Practice for Conducting an Interlaboratory Study to
insoluble material (obtained from following this test method)
Determine the Precision of a Test Method
and report the types of materials present.
3. Terminology
1.3 This standard does not purport to address the titanium
dioxide or lead chromate pigment measurement (after ashing)
3.1 Definitions of Terms Specific to This Standard:
which is detailed in Test Methods D1394 and D126.
3.1.1 ash, n—the inorganic components of thermoplastic
traffic marking including the pigment, glass spheres, and filler.
1.4 This standard will attempt to address the interference of
3.1.2 binder, n—the organic components (resinous compo-
organic pigments with the binder results.
nents) of thermoplastic traffic marking that bind the pigments,
1.5 The analytical procedures appear in the following order:
glass spheres, and filler together as a unit.
Sections
3.1.3 filler, n—the inorganic components of thermoplastic
Percent Binder 10
traffic marking not including the pigments, retroreflective
Percent Retroreflective Optics or 11
Non-Retroreflective Particles
optics, or non-retroreflective particles that are considered
functional.
1.6 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
3.1.4 retroreflective optic, n—functionalparticlethatreflects
only. and returns a relatively high proportion of light in a direction
close to the light source. This characteristic is maintained over
1.7 This standard does not purport to address all of the
a wide variation of the angle made by the incident light ray and
safety concerns, if any, associated with its use. It is the
normal to the retroreflective surface. This includes a single
responsibility of the user of this standard to establish appro-
component structure such as a spherical glass bead or a multi
priate safety and health practices and determine the applica-
component structure with a core and a surface covered with a
bility of regulatory limitations prior to use.
small retroreflector.
3.1.5 non-retroreflective particles, n—functional particle
that is insoluble in HCL, such as aluminum oxide, ground
1
These test methods are under the jurisdiction of ASTM Committee D01 on
Paint and Related Coatings, Materials, and Applications and are the direct
2
responsibility of Subcommittee D01.44 on Traffic Coatings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2012. Published December 2012. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1988. Last previous edition approved in 2012 as D4797 – 12. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/D4797-12A. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4797 − 12a
glass, quartz, etc., that are added for skid resistance or other 6.13 Magnetic Stirring Bar.
non-retroreflective functional purpose.
6.14 Magnetic Stirring Plate.
3.1.6 pigment, n—titanium dioxide, lead chromate
6.15 Spatula.
colorants, and/or organic pigments.
...

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: D4797 − 12 D4797 − 12a
Standard Test Methods for
Gravimetric Analysis of White and Yellow Thermoplastic
1
Traffic Marking
This standard is issued under the fixed designation D4797; 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 These test methods cover procedures for the gravimetric analysis of the binder and hydrochloric Acid (HCL) insoluble
particles in white and yellow thermoplastic traffic markings. The HCL insoluble particles can be retroreflective optics, such as glass
beads or some other type of retroreflective optic, or non-retroreflective particles such as silica sand, or a combination of any two
or more of these materials.
1.2 This standard does not address the physical separation and the individual quantification of each component when a mixture
of two or more HCL insoluble materials is present. Rather it requires the user to visually evaluate the HCL insoluble material
(obtained from following this test method) and report the types of materials present.
1.3 This standard does not purport to address the titanium dioxide or lead chromate pigment measurement (after ashing) which
is detailed in Test Methods D1394 and D126.
1.4 This standard will attempt to address the interference of organic pigments with the binder results.
1.5 The analytical procedures appear in the following order:
Sections
Percent Binder 10
Percent Retroreflective Optics or 11
Non-Retroreflective Particles
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.7 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D126 Test Methods for Analysis of Yellow, Orange, and Green Pigments Containing Lead Chromate and Chromium Oxide
Green
D1394 Test Methods for Chemical Analysis of White Titanium Pigments
D7307 Practice for Sampling of Thermoplastic Traffic Marking Materials
D7308 Practice for Sample Preparation of Thermoplastic Traffic Marking Materials
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 ash, n—the inorganic components of thermoplastic traffic marking including the pigment, glass spheres, and filler.
1
These test methods are under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and are the direct responsibility of
Subcommittee D01.44 on Traffic Coatings.
Current edition approved June 1, 2012Nov. 1, 2012. Published August 2012December 2012. Originally approved in 1988. Last previous edition approved in 20072012
as D4797D4797 – 12. – 88 (2007). DOI: 10.1520/D4797-12.10.1520/D4797-12A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D4797 − 12a
3.1.2 binder, n—the organic components (resinous components) of thermoplastic traffic marking that bind the pigments, glass
spheres, and filler together as a unit.
3.1.3 filler, n—the inorganic components of thermoplastic traffic marking not including the pigments, retroreflective optics, or
non-retroreflective particles that are considered functional.
3.1.4 retroreflective optic, n—functional particle that reflects and returns a relatively high proportion of light in a direction close
to the light source. This characteristic is maintained over a wide variation of the angle made by the incident light ray and normal
to the retroreflective surface. This includes a single component structure such as a spherical glass bead or a multi component
structure with a core and a surface covered with a small retroreflector.
3.1.5 non-retroreflective part
...

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