ASTM D5572 adhesives used for finger joints in nonstructural lumber products specification establishes performance levels for adhesives to be used in finger joints in nonstructural bonded-lumber products. Such products include, but are not limited to, interior and exterior mouldings, window and door components or parts, and bonded-lumber panels. Such products specified by ASTM D5572 include, but are not limited to, interior and exterior mouldings, window and door components or parts, and bonded-lumber panels. Adhesives that meet the ASTM D5572 requirements of the various performance classes are considered capable of providing an adequate bond for use under the conditions as described in ASTM D5572 for the class.
The ASTM D5572 specification is to be used to evaluate adhesives as well as the adhesive bonds in the finger joints. See ASTM D5572 Section, Significance and Use, for limitations when using the ASTM D5572 specification to evaluate industrially manufactured finger joints. The ASTM D5572 specification supersedes the finger-joint portion of the 1990 edition of Specification ASTM D3110. ASTM D5572 adhesives test for finger joints in nonstructural lumber products shall be conducted such as dry, soak, elevated-temperature, and temperature-humidity tests for dry-use classification and dry, boil, elevated-temperature, and vacuum-pressure tests for the wet-use classification. The adhesives under the ASTM D5572 specification shall be tested for performance which shall meet the following requirements: moisture content; specific gravities of wood species; tensile strength; wood failure for soft and hardwoods; and rupture modulus.
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