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Durability of building joint sealantsAuthor(s): Christopher C. White; Kar Tean Tan; Donald L. Hunston; R. Sam Williams
Source: Service live prediction of polymeric materials global perspectives. New York : Springer, c2009 : pages 115-128. ISBN: 0387848754: 9780387848754.
Publication Series: Miscellaneous Publication
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DescriptionPredicting the service life of building joint sealants exposed to service environments in less than real time has been a need of the sealant community for many decades. Despite extensive research efforts to design laboratory accelerated tests to duplicate the failure modes occurring in field exposures, little success has been achieved using conventional durability methodologies. In response to this urgent need, we have designed a laboratory-based test methodology that used a systematic approach to study, both independently and in combination, the major environmental factors that cause aging in building joint sealants. Changes in modulus, stiffness, and stress relaxation behavior were assessed. Field exposure was conducted in Gaithersburg, MD, using a thermally-driven exposure device with capabilities for monitoring changes in the sealant load and displacement. The results of both field and laboratory exposures are presented and discussed.
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CitationWhite, Christopher C.; Tan, Kar Tean; Hunston, Donald L.; Williams, R. Sam. 2009. Durability of building joint sealants. Service live prediction of polymeric materials global perspectives. New York : Springer, c2009 : pages 115-128. ISBN: 0387848754: 9780387848754
KeywordsService life, accelerated life testing, sealing compounds, deterioration, weathering, timber joints, testing, fatigue, sealing compounds, mechanical properties, elasticity, modulus of elasticity, temperature, humidity, ultraviolet radiation, polyvinyl chloride, strains, stresses, buildings, accelerated testing, failure, exposure tests, stiffness, aging, durability, stress analysis
- Durability of sealants exposed to outdoor weathering and hot compression cycles
- Merging weather data with materials response data during outdoor exposure
- Evaluation of materials during outdoor testing using a computer-controlled test apparatus
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