ASTM D5405/D5405M-98 (R2021) PDF Download

The ASTM D5405/D5405M-98 (R2021) standard is a test method that is used to determine the time-to-failure (creep-rupture) of joints made from nonbituminous organic roof membrane material. This test method is conducted in a laboratory setting and involves subjecting the joints to a constant tensile load under controlled environmental conditions.

The standard covers two types of joints: T-peel joints and lap-shear joints. These joints can be made from either unreinforced or fabric-reinforced membrane material. The sheet materials used for fabricating the joints include vulcanized rubbers, nonvulcanized polymeric sheets, and thermoplastics.

Different bonding methods can be used to form the joints, including the use of liquid-based adhesives, preformed tapes, and thermal and solvent weld processes.