White, C.
, Hunston, D.
and Tan, K.
(2009),
Effect of Strain on the Modulus of Sealants Exposed to the Outdoors, Journal of ASTM International
(Accessed May 4, 2025)
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Effect of Strain on the Modulus of Sealants Exposed to the Outdoors
Published
Author(s)
, ,
Abstract
The effects of applied strain on sealants exposed to outdoor weathering were examined for two sealant formulations, sealants A and C. Both static and dynamic strain was applied to the sealants during the summer in a Gaithersburg, MD-outdoor location. Both sealants exhibited a reversible change in equilibrium distance. Stress relaxation studies on all samples revealed that, for sealant A, two mechanisms affected modulus change; exposure without applied strain increased the modulus while additionally applied strain decreased the modulus. Only one mechanism that decreased the modulus was found for sealant C. A 7% dynamic strain and a 25% static strain were observed to produce equivalent modulus changes in both systems.Citation
Journal of ASTM International
Volume
6
Issue
2
Pub Type
Journals
Keywords
Sealant, Strain, Modulus, Outdoor Weathering, Characterization
Citation
Issues
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Created March 11, 2009, Updated February 19, 2017