Experimental study on mechanical property degradation of thermal aging laminated rubber bearing

Laminated Rubber Bearing (LRB) plays a significant role in recent bridge-supporting systems and its characteristics are mainly contributed by their nonlinear properties. However, LRB performance deteriorates during aging. To better understand the aging phenomenon and its influence on mechanical properties, several circular LRBs of different sizes were introduced. Firstly, thermal aging tests were carried out, and then pseudo-static tests were carried out to study the influence of aging on modulus, friction coefficient, and frictional sliding. The results show that the compression modulus and shear modulus are nonlinear with the aging time. The shape factor also affects mechanical properties. When the shape factor is larger, the effect of aging degradation on mechanical properties is alleviated. The frictional coefficients at the surfaces of testing LRBs get increased with the thermal aging period, which gets stable after 10-year aging. The initial friction-sliding displacements are increasing with the increase of thermal aging period.

• Record URL:
  • https://doi.org/10.1016/j.cscm.2023.e02060
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S2214509523002395
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/22145095
• Supplemental Notes:
  • © 2023 The Authors. Published by Elsevier Ltd. Abstract reprinted with permission of Elsevier.
• Authors:
  • He, Zhongying
  • 0000-0001-6577-3264
  • Song, Yifan
  • Wang, Jianguo
  • Xu, Wen
  • Guan, Hongzhai
  • Pang, Yutao
• Publication Date: 2023-7

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: e02060
• Serial:
  • Case Studies in Construction Materials
  • Volume: 18
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 2214-5095
  • Serial URL: http://www.sciencedirect.com/science/journal/22145095

Subject/Index Terms

• TRT Terms: Aging (Materials); Bearing materials; Bridge bearings; Laminates; Mechanical properties; Rubber; Temperature
• Subject Areas: Bridges and other structures; Highways; Materials;

Filing Info

• Accession Number: 01888887
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 26 2023 3:59PM