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Title: Monitoring Sealant Durability during Instrumented Outdoor Exposure with Variation in Prestrain

Source: In: Proceedings of the Annual Meeting of the Adhesion Society, Savannah, GA 2015; 4 p.

Author(s)Schueneman, Gregory T.; Lacher, Steven; Hunt, Christopher G.

Publication Year: 2015  View PDF »

Category: Conference Proceedings
Associated Research Project(s):   FPL-4707-1B

Abstract: Sealants are a vital part of a building’s environmental barrier envelope. Their ability to bond to numerous dissimilar substrates and form cure-in-place seals results in their widespread use throughout single story and high rise buildings. A typical 40 story concrete and glass facade building can have 70 miles of sealant bonds. Failure of sealants can lead to energy loss and widespread moisture ingression resulting in cosmetic and structural damage as well as the potential for mold colonization. Therefore, increasing the durability of sealants is of significant economic value. In this research program we are seeking to discern the significance of environmental and strain effects on sealant durability. Sealant bonded specimens are fixtured on automated test instruments outdoors that impose hot compression/ cold tension strain cycling in accordance with the temperature of exterior panels simulated here by a section of poly(vinyl chloride) (PVC) pipe. The effect of application conditions is investigated by prestraining the sealants. Herein we report the results of 17 months of continuous outdoor exposure.

Keywords: Building Sealants; Durability; Strain Cycling; Apparent Modulus

Publication Review Process: Informally Refereed (Peer-Reviewed)

File size: 1,357 kb(s)

Date posted: 08/31/2015

This publication is also viewable on Treesearch:  view
RITS Product ID: 74150
Current FPL Scientists associated with this product (listed alphabetically)
Hunt, Christopher G.
Research Chemist
Schueneman, Gregory
Supervisory Research Materials Engineer

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