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Studies on the Effect of Movement During the Cure on the Mechanical Properties of Building Joint Sealant

Published

Author(s)

Christopher C. White

Abstract

A novel sealant-testing device was used to continuously monitor the mechanical properties of a one part silicone sealant for movement cycles initiated from 10 h to 168 h after sample creation. These cure times fall between the proposed RILEM TC139 technical recommendation of 5 min and the ASTM C719 standard of 21 d. Apparently, enough cross-linking occurred prior to testing such that neither the overall movement history of the sample nor the deformation step shapes affected subsequent curing of the sealant. A critical parameter for sealant performance appears to be the extent of cure at the onset of movement.
Citation
Polymer Degradation and Stability
Volume
50

Keywords

ASTM C719, cross-linking, cure, mechanical properties, polymer, rubber elastisity, sealant

Citation

White, C. (2010), Studies on the Effect of Movement During the Cure on the Mechanical Properties of Building Joint Sealant, Polymer Degradation and Stability, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860453 (Accessed June 21, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created September 9, 2010, Updated February 19, 2017