Rubber Buffings for Bridge Approach Expansion Joints

Details

• Creators:
  Todsen, Mike ; Steffes, Robert ; Gansen, Elijah
• Corporate Creators:
  Iowa. Dept. of Transportation. Office of Materials
• Corporate Contributors:
  Iowa. Highway Division
• Subject/TRT Terms:
  • Bridge approaches
  • Expansion joints
  • Foams
  • Retreaded tires
  • Rubber
  • Sealing compounds
  • Tire industry
  • Waste products
  • Bridges and other structures
  • Design
  More +
• Publication/ Report Number:
  MLR-01-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa ; United States
• TRIS Online Accession Number:
  00972481
• Edition:
  Final Report 5-01 to 8-01
• Corporate Publisher:
  Iowa. Dept. of Transportation. Highway Division
• Abstract:
  Many of the bridges in the state of Iowa have type 'CF', 'EE', or 'EF' expansion joints installed in the bridge approach slabs. These joints, which are typically 4" wide, are currently filled with a foam expansion joint material that is covered with a sealant. Over time the sealant begins to pull off of the walls of the joint and it ultimately fails. The joint, which is now exposed to the weather, is then filled with water and solids. The foam joint material, which is lighter than water, floats out of the joint onto the highway. This foam resembles a large 4" by 6" plank and poses a threat to motorists. A possible solution to this problem would be to replace the foam material with rubber buffings. Rubber buffings are a by-product of the tire retread industry.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37968/dot_37968_DS1.pdf
• File Type:
  [PDF - 802.51 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:e228f10b6f3eb2c4a81cf939540f1c8aa07a3739432ba00b5230dd41280f09cd