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- W577488006 abstract "Elastomeric bridge bearings were used for the first time in Poland in 1963. They were installed in 16 m span concrete road bridge bear Warsaw. The bearings consisted of two layers of neoprene bonded to three steel laminates. After over 30-years of service, because of apparent signs of corrosion on exposed steel elements non covered elastomer, the bearings had been removed and replaced by the new ones with steel plates completely encased in elastomer. Eight removed bearings were subjected to the routine compression and shear tests. Despite of fears, their mechanical and physical characteristics have appeared rather satisfactory. Elastomer has maintained good bond to laminating steel plates and the bearings suitable elastic properties. The elastic and shear moduli: E = 392 MPa and G = 1,0 MPa obtained from the tests correspond to the values required in present standards. The bearings did not show any excessive creep under compression and shear stresses. The shape elastomer elastic hysteresis were comparable to current manufactured bearings. Nevertheless, the material tests of samples cut out of the bearings have shown that the neoprene has lost some of its original properties but not more than 10-20%. Its hardness did not change very much maintaining the value of 60 degree Shore A. Tests have confirmed recent hypothesis on a greater durability of elastomeric bearings than predicted a short time ago. Fulfilling appropriate technological requirements theses bearings can even reach more than 50-years safe life." @default.
- W577488006 created "2016-06-24" @default.
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- W577488006 date "1996-11-01" @default.
- W577488006 modified "2023-09-23" @default.
- W577488006 title "Rubber Bridge Bearings Test Results After 30 Years in Service" @default.
- W577488006 doi "https://doi.org/10.14359/14346" @default.
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