SYMPOSIA PAPER Published: 01 January 1992

The Effect of Building Joint Movements on Outdoor Performance of Sealants During Their Cure


Due to changes in environmental conditions, such as temperature, building joints move continuously. Accordingly, sealants in joints are subjected to such movements from the time of application. Failures of sealant in joints, such as cracking, breakage, and deformation, particularly those which occur in the short period of time after a sealant has been applied, may be caused by the movement of joints during the sealant curing. Up to the present, various research and testing methods in building material standards do not focus on performance against these failures. To study the relation between failure of sealants and the movement of joints, a testing apparatus was designed and dynamic outdoor exposure tests were conducted of various kinds of sealants. Failure of sealant attributable to joint movement during curing was found to occur in four patterns. These findings correspond to sealant failures actually observed in buildings in service.

Author Information

Matsumoto, Y
Institute of Technology, Shimizu Corporation, Tokyo, Japan
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Developed by Committee: C24
Pages: 30–44
DOI: 10.1520/STP24233S
ISBN-EB: 978-0-8031-5217-5
ISBN-13: 978-0-8031-1482-1