LOAD-DEFORMATION CHARACTERISTICS OF ELASTOMERIC BRIDGE BEARING PADS

THE USE OF ELASTOMERIC PADS AS BRIDGE BEARINGS ARE BEING INVESTIGATED BECAUSE OF THEIR ECONOMICS, MAINTENANCE AND EFFECTIVENESS UNDER COMPRESSION AND SHEAR LOADS. THE ELASTOMERS INVESTIGATED WERE NEOPRENE, BUTYL RUBBER AND CHLORINATED BUTYL RUBBER /CHLOROBUTYL/. THE EFFECTS OF ACCELERATED AGING AND LOAD-BEARING PROPERTIES AT LOW TEMPERATURES ARE BEING INVESTIGATED. ALL THREE PRODUCTS HAD EQUAL COMPRESSIVE AND SHEAR LOAD-DEFORMATION PROPERTIES WHEN EVALUATED AT ROOM TEMPERATURE, SHOWED RESISTANCE TO ACCELERATED AGING, AND HAD THE SAME DYNAMIC AND STATIC CREEP PROPERTIES. THE BUTYL AND CHLOROBUTYL BEARING PADS WERE TWO TO THREE TIMES MORE FLEXIBLE THAN THE NEOPRENE PAD AND RETAINED THEIR LOW-TEMPERATURE FLEXIBILITY ADVANTAGE EVEN AFTER ACCELERATED AGING CONDITIONS.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1963/34/34-005.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • Clark, Earl V
  • Moultrop, Kendall
• Discussers:
  • Schmitt, S W
  • Clark, Earl V
  • Moultrop, Kendall
• Publication Date: 1963

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 90-116
• Monograph Title: Bridge design, analysis and costs
• Serial:
  • Highway Research Record
  • Issue Number: 34
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Bearing tests; Bridge bearing pads; Chlorination; Compression; Crash investigation; Creep properties; Dynamics; Economic efficiency; Economics; Elastomers; Flexibility; Loads; Maintenance; Neoprene; Rubber; Shear strength; Statics; Studies; Temperature; Utilization
• Uncontrolled Terms: Efficiency
• Old TRIS Terms: Aging; Butyl rubber; Chlorobutyl; Resistance; Static conditions
• Subject Areas: Bridges and other structures; Economics; Highways; Maintenance and Preservation; Research; Safety and Human Factors;

Filing Info

• Accession Number: 00207696
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 18 1994 12:00AM