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Studies of the ageing behaviour of gun-grade building joint sealants - The state-of the-art



Title: Studies of the ageing behaviour of gun-grade building joint sealants - The state-of the-art
Author(s): A. T. Wolf
Paper category : conference
Book title: International RILEM Symposium on Building Joint Sealants
Editor(s): A.T. Wolf
Print-ISBN: None
e-ISBN: 235158015X
Publisher: RILEM Publications SARL
Publication year: 1998
Pages: 25 - 52
Total Pages: 28
Nb references: 55
Language: English


Abstract: In the mid-1970s the first studies, in the form of inspections of building joints, were conducted in England and Germany into the failure rate of sealants. As a consequence of these studies, the ageing behaviour of sealants was investigated with the aid of artificial accelerated ageing methods and by storing sealants outdoors for several years in moderate or tropical climates. The results acquired with these ageing methods can only be interpreted on the basis of a comprehensive understanding of the environmental factors responsible for ageing and the synergy of such factors. In this context, particular attention must be paid to the cyclic mechanical strain upon sealants which occurs in a building joint due to expansion, compression and shearing. By comparing the results acquired using different ageing methods, it is possible to demonstrate the short-comings of the accelerated ageing methods currently in use and to submit recommendations for the future development of standardised methods.


Online publication: 2003-05-25
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/235158015X.003