Significance and Use
This test method is not intended to simulate an actual use condition but it will give some indication of the elastomeric properties or flexibility of a building joint sealant at low temperature. It can serve to differentiate between elastomer-based sealants and sealants based on nonelastic binders that can harden or embrittle on aging and crack or lose adhesion when flexed at low temperature. In addition, it can aid in identifying sealants that have poor flexibility because they are overextended and contain a very low level of elastomeric binder as well as those sealants having binders that will embrittle at low temperature.
FIG. 1 Low-Temperature Flexibility (Tenacity)
|(a) Complete Cracking and Adhesive Failure||(b) Severe Cracking|
|( c) No Cracking or Adhesive Failure|
1.1 This test method covers determination of the low-temperature flexibility and tenacity of one-part, elastomeric, solvent-release type sealants after cyclic high- and low-temperature aging.
1.2 The subcommittee with jurisdiction is not aware of any similar ISO standard.
1.3 This 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C717 Terminology of Building Seals and Sealants
elastomeric; flexibility; solvent-release sealant; Elastomeric seals/sealants; Flexibility--sealants; Solvent-release sealants; Temperature tests--building materials; Tenacity;
ICS Number Code 91.100.50 (Binders. Sealing materials)
ASTM International is a member of CrossRef.
Citing ASTM Standards
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