1.1 This test method covers Type A Durometer hardness of thermoplastic pavement marking material at elevated temperatures.
1.2 This test method is similar to Test Method D2240 for hardness with special attention given to keeping the temperature of the test sample and instrument constant. Within the highway materials community, it is sometimes known as “indentation resistance.”
1.3 All materials, instruments or equipment used for the determination of temperature, hardness and time shall be traceable to National Institute of Standards and Technology or other internationally recognized organizations parallel in nature.
1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D7735-17(2022) Referenced Document
ASTM D16 Standard Terminology for Paint, Related Coatings, Materials, and Applications
ASTM D2240 Standard Test Method for Properties of Rubber &8212; Durometer Hardness*, 2024-04-21 Update
ASTM D7307 Standard Practice for Sampling of Thermoplastic Pavement Marking Materials
ASTM D7308 Standard Practice for Sample Preparation of Thermoplastic Pavement Marking Materials
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D7735-17(2022) history
2022ASTM D7735-17(2022) Standard Test Method for Type A Durometer Hardness Testing of Thermoplastic Pavement Marking at Elevated Temperatures
2017ASTM D7735-17 Standard Test Method for Type A Durometer Hardness Testing of Thermoplastic Pavement Marking at Elevated Temperatures
2011ASTM D7735-11(2016) Standard Test Method for Type A Durometer Hardness Testing of Road Marking Thermoplastic at Elevated Temperatures
2011ASTM D7735-11e1 Standard Test Method for Type A Durometer Hardness Testing of Road Marking Thermoplastic at Elevated Temperatures
2011ASTM D7735-11 Standard Test Method for Type A Durometer Hardness Testing of Road Marking Thermoplastic at Elevated Temperatures