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ASTM D4796-88(2004)

(Test Method)

Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials

Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials

SIGNIFICANCE AND USE
The function of this test method is to provide numerical instrumental results indicating the cohesive or adhesive, or both, bond strength of thermoplastic traffic marking to a specified cement brick substrate.
The use of this test method allows the user and manufacturer to control the quality of the product and make inferences about the performance of the thermoplastic traffic marking product. Results from these tests also provide information helpful in researching and developing thermoplastic traffic marking materials.
Strict adherence to the procedures outlined is necessary for precision of the test method. Under no conditions should the bond strength be accepted unless there is conformance to 9.14. Precise results are obtained only when one steel block is epoxied to the thermoplastic traffic marking on the cement brick.
FIG. 1 Bond Strength Testing Apparatus
SCOPE
1.1 This test method provides an instrumental means for the determination of thermoplastic traffic marking material bond strengths using cement bricks and steel cubes.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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-May-2004
ICS
93.080.20 - Road construction materials
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.44 - Traffic Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D4796-88(1998) - Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials
Effective Date
01-Jun-2004
Replaced By
ASTM D4796-10 - Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials
Effective Date
01-Dec-2010
Referred By
ASTM D8161-17(2022) - Standard Test Method for Impact Resistance of Thermoplastic Pavement Marking Materials over a Highway Substrate by Means of a Striker Impacted by a Falling Weight
Effective Date
01-Jun-2004

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ASTM D4796-88(2004) - Standard Test Method for Bond Strength of Thermoplastic Traffic Marking MaterialsASTM D4796-88(2004) - Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials
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ASTM D4796-88(2004) - Standard Test Method for Bond Strength of Thermoplastic Traffic Marking Materials
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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:D4796–88(Reapproved2004)
Standard Test Method for
1
Bond Strength of Thermoplastic Traffic Marking Materials
This standard is issued under the fixed designation D4796; 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 3.2.3 thermoplastic traffıc marking, n—a highly filled
100 % total solids highway marking system that when heated
1.1 This test method provides an instrumental means for the
toamoltenstatecanbeextrudedorsprayedontoaroadsurface
determination of thermoplastic traffic marking material bond
and when cooled forms a solid durable delineator.
strengths using cement bricks and steel cubes.
1.2 The values stated in SI units are to be regarded as the
4. Summary of Test Method
standard. The values given in parentheses are for information
4.1 The thermoplastic specimen is prepared for this test by
only.
first melting a sample to its application temperature under
1.3 This standard does not purport to address all of the
continuous agitation. The specimen is then applied to the
safety concerns, if any, associated with its use. It is the
specified cement brick by a hot drawdown blade. Two steel
responsibility of the user of this standard to establish appro-
cubes are then immediately placed onto the hot thermoplastic
priate safety and health practices and determine the applica-
line and the excess thermoplastic trimmed away from around
bility of regulatory limitations prior to use.
the two steel cubes. After the trimming is complete, the steel
2. Referenced Documents cubes are removed. A heated steel cube is bonded with epoxy
2
to the square of thermoplastic and allowed to cure overnight
2.1 ASTM Standards:
before determining the bond strength on a Dillon dynamometer
C109/C109M Test Method for Compressive Strength of
or similar device.
Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
Specimens)
5. Significance and Use
C881/C881M Specification for Epoxy-Resin-Base Bonding
5.1 The function of this test method is to provide numerical
Systems for Concrete
instrumental results indicating the cohesive or adhesive, or
D883 Terminology Relating to Plastics
both, bond strength of thermoplastic traffic marking to a
E284 Terminology of Appearance
specified cement brick substrate.
F412 Terminology Relating to Plastic Piping Systems
5.2 The use of this test method allows the user and manu-
3. Terminology facturer to control the quality of the product and make
inferences about the performance of the thermoplastic traffic
3.1 Definitions—Definitions are in accordance with Termi-
marking product. Results from these tests also provide infor-
nology D883, E284, and F412 unless otherwise indicated.
mation helpful in researching and developing thermoplastic
3.2 Definitions of Terms Specific to This Standard:
traffic marking materials.
3.2.1 cement brick, n—a brick formed by mixing cement
5.3 Strict adherence to the procedures outlined is necessary
and fine sand together and allowing to harden.
for precision of the test method. Under no conditions should
3.2.2 thermoplastic, n—traffic marking (same as 3.2.3).
the bond strength be accepted unless there is conformance to
9.14. Precise results are obtained only when one steel block is
1
This test method is under the jurisdiction of ASTM Committee D01 on Paint
epoxied to the thermoplastic traffic marking on the cement
and Related Coatings, Materials, andApplications and is the direct responsibility of
brick.
Subcommittee D01.44 on Traffic Coatings.
Current edition approved June 1, 2004. Published June 2004. Originally
6. Types of Separation in Bond Strength Tests
approved in 1988. Last previous edition approved in 1998 as D4796 – 88 (1998).
DOI: 10.1520/D4796-88R04.
6.1 Thermoplastic to Steel Cube Separation—This type of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
separation occurs where there is an insufficient bond between
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the thermoplastic and steel cube probably due to insufficient
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. coverage of the epoxy adhesive.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D4796–88 (2004)
FIG. 1 Bond Strength Testing Apparatus
6.2 Thermoplastic to Thermoplastic Separation—This type
of separation is caused by internal cohesive failure of the
thermoplastic. This separation is acceptable when it exceeds
the specified bond strength.
6.3 Thermoplastic
...

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