Extension cycling of sealants

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Pages455459; # of pages: 5
Subjectsealants; building movement joints; mechanical properties; failure (deficiency); Buildings; mastic; joint de mouvement; propriete mecanique; insucces
AbstractThe amplitude and the rate of daily joint movement in buildings was estimated from meteorological data. When model specimens of one-part chemically-curing silicone sealants were cycled at these conditions and at various temperatures, the sealant manifested rubbery elasticity. If an initial extension was imposed previous to the cycling extensions, failure could be produced. The results of cycling experiments have been correlated with the characteristic failure points of tensile tests on similar specimens. This allows a generalization of the results and also suggests how cycling tests for specifications could be derived.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number14287
NPARC number20374530
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Record identifier8048d241-90bb-487d-9153-b753fce23002
Record created2012-07-23
Record modified2016-05-09
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