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    Author(s): Gregory T. SchuenemanSteven LacherChristopher G. Hunt
    Date: 2018
    Source: In: Proceedings, 41st annual meeting of the adhesion society. San Diego, CA: 4p.
    Publication Series: Paper (invited, offered, keynote)
    Station: Forest Products Laboratory
    PDF: Download Publication  (811.0 KB)

    Description

    Elastomeric sealants are vital to the construction of energy efficient and water tight buildings. Sealants are a small fraction of the construction budget. Upon failure their removal and reinstallation, and repair of moisture/mold damage can run in to the 10’s of millions with the added risk of illness based litigation. In this research program we are seeking to discern the significance of environmental and strain effects on sealant durability as well as the initial state of stress (aka installation/cure conditions). Sealant bonded specimens are fixtured on automated test instruments and static specimen holders outdoors with three prestrains to simulate winter, spring/fall, and summer installation. The automated test frame imposes hot compression/ cold tension strain cycling in accordance with the temperature of exterior building components simulated here by a section of poly(vinyl chloride) (PVC) pipe. Herein we report the results of 45 months of continuous outdoor exposure.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Schueneman, Gregory T.; Lacher, Steven; Hunt, Christopher G. 2018. Effects of prestrain, outdoor aging, and simultaneous strain cycling on the durability of building sealants. In: Proceedings, 41st Annual Meeting of the Adhesion Society. San Diego, CA: 4p.

    Keywords

    Durability, building sealant, effective modulus, installation condition

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https://www.fs.usda.gov/treesearch/pubs/56590