ASTM D6690-21 PDF Download

ASTM D6690-21 is a standard specification that outlines the requirements for four types of joint and crack sealants of the hot applied type. These sealants are designed for use in sealing joints and cracks in both Portland cement concrete and asphaltic concrete pavements. The purpose of this specification is to ensure that the sealants meet certain performance criteria to effectively seal and protect the pavement surfaces.

The standard specifies various tests to evaluate the sealants, including cone penetration, softening point, non-immersed and water-immersed bond properties, oven-aged resilience, and asphalt compatibility. These tests are used to assess important properties such as the sealant's ability to penetrate cracks, its resistance to softening at high temperatures, its adhesion to the pavement surface in both dry and wet conditions, its ability to retain resilience after exposure to heat, and its compatibility with asphalt.

It is important to note that this specification does not cover the properties required for sealants used in areas of pavement subject to jet fuel or other fuel spillage, such as vehicle and aircraft refuel and maintenance areas. Additionally, the standard includes explanatory notes and footnotes that provide additional information, but these should not be considered as requirements of the standard.