ASTM D6297-20 PDF Download

The ASTM D6297-20 standard provides the material, testing, and application requirements for a field molded asphaltic plug joint (APJ) used in expansion joint sealing on asphalt concrete overlay and Portland cement concrete decks. The specification specifically focuses on field-molded APJs, which can consist of either multilayer or single-layer application systems, depending on individual manufacturing requirements.

The standard mandates that the asphaltic binder used in the APJ be a thermoplastic polymeric-modified asphalt. The aggregates used must be crushed, washed, and dried. Physical properties of the asphalt, including softening point, tensile adhesion, ductility, resilience, and flexibility, must also be tested and comply with other relevant ASTM documents.

The standard acknowledges the need for practical means of testing the watertightness of the individual APJ systems, either in the field or at a testing laboratory. It also specifies that when used on highway bridges, there should be specific identification of limits on maximum joint movements for each type of APJ. It is important to note that APJs should not be used for movement applications that exceed ±25 mm from the installation width.

The standard includes reference notes and footnotes, which provide explanatory material. It states that these notes and footnotes, excluding those in tables and figures, should not be considered as requirements of the standard.