Field investigation of the corrosion protection performance of bridge decks and piles constructed with epoxy-coated reinforcing steel in Virginia.

Details

• Creators:
  Weyers, R. E. ; Sprinkel, M. M. ; Pyc, W. ; Zemajtis, J. ; Liu, Y. ; Mokarem, D.
• Corporate Creators:
  Virginia Polytechnic Institute and State University. Charles E. Via Dept. of Civil Engineering ; Virginia Transportation Research Council (VTRC) ; Virginia. Dept. of Transportation
• Subject/TRT Terms:
  • Bridge decks
  • Corrosion protection
  • Field tests
  • Piles (Supports)
  • Epoxy coatings
  • Bridge decks
  • Carbonation
  • Chlorides
  • Concrete piles
  • Corrosion prevention
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• Publication/ Report Number:
  VTRC 98-R4
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Edition:
  Final: 1/93-6/97
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  The corrosion protection performance of epoxy-coated reinforcing steel (ECR) was assessed in three bridge decks and the piles ; in three marine structures in Virginia in 1996. The decks were 17 years old, two of the marine structures were 8 years old, and the ; other marine structure was 7 years old at the time of the investigation. The deck investigations included visually surveying surface ; cracks in the right traffic lane and drilling 12 cores randomly located in the lowest 12th percentile cover depth. The pile ; investigations included removing 1 core at an elevation between high and low tides from each of 30 piles. The evaluation of the ; concrete in each core included visually inspecting and measuring moisture content, absorption, percent saturation, carbonation ; depth, and effective chloride diffusion constant. The evaluation of the ECR from each core included visually inspecting and ; measuring physical damage, coating thickness, adhesion loss and corrosion at damaged sites, and undercoating corrosion at ; adhesion test sites. The chloride content of the concrete and the carbonation of the ECR trace were also determined for each core. ; In the majority of bars examined, the epoxy coating has debonded or is debonding from the reinforcing bar. This occurs without ; the presence of chloride, and its rate is related to concrete moisture conditions, temperature, coating defects, and other bar and ; coating properties. Based on the results of this field study, epoxy coatings can be expected to debond from reinforcing steel in ; Virginia's marine environments in about 6 years and from bridge decks in about 15 years. ; The authors recommend that additional bridge decks be evaluated to confirm these results.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/15531/dot_15531_DS1.pdf
• File Type:
  [PDF - 2.57 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:b3bffb602acbd60f9c37c0f3a8bb1e6c338754f43b499d11b8c3a0afd637aee6