AIJ Journal of Technology and Design
Online ISSN : 1881-8188
Print ISSN : 1341-9463
ISSN-L : 1341-9463
Structures
A STUDY OF AGING EFFECT ON A RUBBER BEARING AFTER ABOUT THIRTY YEARS IN USE
Naoto KAMOSHITA, Hiroki HAMAGUCHI, Yuma TANI, Shigenobu SUZUKI
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Keywords: Seismic isolation, Natural rubber bearing, Aging effect, Creep
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2018 Volume 24 Issue 56 Pages 41-46

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Abstract
A study of aging effects on natural rubber bearing that was installed in a seismically isolated building about 30 years ago was conducted. The dynamic properties of natural rubber bearing, physical properties and chemical properties of rubber were examined and there were no significant changes compared with original properties. The creep deformation of the natural rubber bearing was also measured. It was confirmed that creep deformation corresponded precisely to the prediction formula. It was assumed that aging doesn’t lead to any significant change of the rubber bearing characteristics.
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© 2018 Architectural Institute of Japan
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