ASTM D4796 – Standard Test Method for Bond Strength of Thermoplastic Pavement Marking Materials
Description:
Significance and Use
5.1 The function of this test method is to provide numerical instrumental results indicating the cohesive and/or adhesive bond strength of thermoplastic pavement marking to a specified cement brick substrate.
5.2 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 pavement marking product. Results from these tests also provide information helpful in researching and developing thermoplastic pavement marking materials.
5.3 The method has been revised to be more consistent to methodology in other ASTM bond methods for coatings in Test Methods D4541, D5179, and D7234.
5.4 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 the method.
Scope
1.1 This test method provides an instrumental means for the determination of thermoplastic pavement marking material bond strengths using cement bricks and loading fixtures.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM D4791