ASTM C1635-22

5.1In any sealant application, the sealant must be capable of maintaining an adhesive bond to the substrate when held in strain for its intended service life.

5.2This test method is an indicator of a sealants ability to adhere under strain to a given substrate.

5.3The default test strain is the movement ability (Class in accordance with Specification C920) of the sealant as designated by the manufacturer. The default joint configuration is 12.7 mm by 12.7 mm by 50.8 mm (¹/₂in. by ¹/₂in. by 2 in.). Other strains and joint configurations may be used and reported as noted in Section 8 and Table 1.

1.1This test method describes a laboratory procedure for measuring the adhesion/cohesion properties of a sealant when subjected to tensile loads resulting from an applied specified strain. The adhesion/cohesion properties are evaluated before, during, and after water immersion.

1.2This test method examines the adhesive and cohesive performance of a sealant on a specified substrate at a strain equivalent to a multiple of the strain/movement capability (Class in accordance with Specification C920) designated by the manufacturer for the given sealant in accordance with Specification C920.

1.3The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.4Comparable TestsOther comparable tests are ISO 10590 and 8340.

1.5This 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.

1.6This 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.