SYMPOSIA PAPER Published: 01 January 1998
STP15666S

Laboratory Cyclic fatigue Test of Silicone Sealant Mini-Specimens

Source

Mini-specimens of silicone based construction sealant having dimensions 2.5x2.5x10-mm were subjected to cyclical movements using manually adjusted vises according to a procedure previously used to assess the performance of standard model sealant specimens. Failure probability analysis using Weibull probability plots allowed quantitative prediction of sealant lifetime. Comparison of the results to those obtained with standard model sealant specimens demonstrated that the fatigue behavior of the smaller samples is reasonably similar to that of the standard and larger specimens, although further work would be required to perfect the technique. Additional work to enhance the method would be warranted since the mini-specimen methodology is shown to offer preparation ease, reduced curing time, increased sample numbers for enhanced reliability results, and greater flexibility for adaptation to completely automated testing procedures.

Author Information

Lacasse, MA
National Research Council Canada, Institute for Research in Construction, Materials Laboratory, Ottawa, Ontario, Canada
Giffïn, GB
National Research Council Canada, Institute for Research in Construction, Materials Laboratory, Ottawa, Ontario, Canada
Margeson, JC
National Research Council Canada, Institute for Research in Construction, Materials Laboratory, Ottawa, Ontario, Canada
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Details
Developed by Committee: C24
Pages: 51–65
DOI: 10.1520/STP15666S
ISBN-EB: 978-0-8031-5385-1
ISBN-13: 978-0-8031-2480-6