The effect of crack motion during epoxy crack injection and curing.

Details

• Creators:
  Soltesz, Steven M.
• Corporate Contributors:
  Oregon. Dept. of Transportation. Research Section ; United States. Federal Highway Administration
• Subject/TRT Terms:
  • Cracking of concrete pavements
  • Bridge decks
  • Seal coating methods
  • Epoxy resins
  • Bridge management systems
  • Injection
  • Structural integrity
• Publication/ Report Number:
  FHWA-OR-RD-05-11
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Corporate Publisher:
  Oregon. Dept. of Transportation. Research Section
• Abstract:
  One strategy to regain structural integrity of cracked reinforced concrete bridge deck girders is to inject the cracks with epoxy. Many bridge owners allow all traffic to use the bridge during injection and curing, while other bridge owners restrict traffic to produce a hold time in which cracks do not open and close. This research study used a laboratory setup to determine the effect of temperature and hold time on epoxy undergoing curing. The comparative measure was the tensile strength of the epoxy after curing. The results showed that traffic should be restricted to stop the crack motion during injection and until the epoxy sets. After the epoxy has set, crack motion while the epoxy undergoes full cure degrades the tensile strength of the epoxy, but not to levels that would affect the structural integrity of the beam.
• Format:
  PDF
• Funding:
  SPR 611
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/22793/dot_22793_DS1.pdf
• File Type:
  [PDF - 298.14 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0fd1e3747e242622a51c3667d9785bc828b8187b977c576d2334d5ef40063e62f92a24d1599202b16667f9ce909f7e8a65ffaf828e466b3eee9175177273c469