EXPERIMENTAL INVESTIGATION ON AGEING BEHAVIORS OF RUBBERS USED FOR BRIDGE BEARINGS

In order to evaluate the deterioration characteristics during the lifecycle of bridge rubber bearing, a series of long-term accelerated exposure tests are performed on four kinds of rubber materials widely utilized for bridge bearings. Different degradation factors are applied in these tests, such a...

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Bibliographic Details
Published inDoboku Gakkai Ronbunshuu A Vol. 62; no. 1; pp. 176 - 190
Main Authors ITOH, Yoshito, GU, Haosheng, SATOH, Kazuya, KUTSUNA, Yukihiro
Format Journal Article
LanguageEnglish
Published Japan Society of Civil Engineers 2006
Subjects
ageing behavior
mechanical property
pre-strain
rubber bearing
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Summary:In order to evaluate the deterioration characteristics during the lifecycle of bridge rubber bearing, a series of long-term accelerated exposure tests are performed on four kinds of rubber materials widely utilized for bridge bearings. Different degradation factors are applied in these tests, such as thermal oxidation, ozone, low temperature ozone, ultraviolet radiation, salt water and acid rain. The test duration lasts from 96 hours to more than 6,OOO hours. Mechanical properties of aged rubber specimens are measured and compared. The effects of pre-strain are investigated too. The ageing behaviors of each kind of rubber are made clear. The test results are fundamental to the prediction of rubber bearings' durability.
ISSN:1880-6023
1880-6023
DOI:10.2208/jsceja.62.176