Compressive Behaviour of Laminated Neoprene Bridge Bearing Pads under Thermal Aging Condition

Abstract:

The present study was conducted to obtain a better understanding of the variation rule of mechanical properties of laminated neoprene bridge bearing pads under thermal aging condition using compression tests. A total of 5 specimens were processed in a high-temperature chamber. After that, the specimens were tested subjected to axial load. The parameter mainly considered time of thermal aging processing for specimens. The results of compression tests show that the specimens after thermal aging processing are more probably brittle failure than the standard specimen. Moreover, the exposure of steel plate, cracks and other failure phenomena are more serious than the standard specimen. The compressive capacity, ultimate compressive strength, compressive elastic modulus of the laminated neoprene bridge bearing pads decreased dramatically with the increasing in the aging time of thermal aging processing. The attenuation trends of ultimate compressive strength, compressive elastic modulus of laminated neoprene bridge bearing pads under thermal aging condition accord with power function. The attenuation models are acquired by regressing data of experiment with the least square method. The attenuation models conform to reality well which shows that this model is applicable and has vast prospect in assessing the performance of laminated neoprene bridge bearing pads under thermal aging condition.

• Periodical: Materials Science Forum (Volume 972)
• Pages: 118-122
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.972.118
• Online since: October 2019
• Authors: Yan Nian Zhang*, Jun Xie
• Keywords: Bridge Bearing Pads, Compression Tests, Compressive Capacity, Thermal Aging

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