Performance Evaluation of Various Corrosion Protection Systems of Bridges in Colorado

Details

• Creators:
  Xi, Yunping ; Abu-Hejleh, Naser ; Asiz, Andi ; Suwito, A.
• Corporate Creators:
  Colorado. Department of Transportation
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Bridge decks
  • Corrosion resistant steel
  • Concrete
  • Durability
  • Epoxy coatings
  • Reinforcing bars
  • Cathodic protection
  • Performance evaluations
  • Literature reviews
  • concrete durability
  More +
• Publication/ Report Number:
  CDOT-DTD-R-2004-1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Colorado
• Edition:
  Final Report
• Corporate Publisher:
  Colorado. Department of Transportation
• Abstract:
  Corrosion of reinforced concrete structures has been a significant problem for many state and transportation agencies since the application of deicing salts was introduced. Much research has been conducted to develop corrosion protection systems that can prolong the life span of reinforced concrete structures. CDOT has several routine and experimental measures to prevent corrosion of the rebar including epoxy-coated rebar, calcium nitrite admixture, organic corrosion inhibitors, a thick cover of quality concrete, and a waterproofing membrane covered by an asphalt overlay. An extensive literature review was performed to collect information on various corrosion protection systems that have been used in the U.S. and around the world. Current CDOT practices in terms of corrosion protection measures were reviewed. A draft inspection plan for Colorado's bridge structures was proposed. This plan could be further refined in the future to evaluate the performance of routine measures and experimental measures for corrosion protection. Field inspections were conducted for two sets of bridges (total of 16 bridges). One set is for evaluating the corrosion damage in some bridges in the TREX project (a major ongoing highway project in the Denver area), and the other set is for the inspection of various corrosion protection systems that have been used in Colorado. The seven TREX bridges inspected in this project used three corrosion protection methods: epoxy-coated rebar, asphalt overlay, and membranes. Corrosion of steel and corrosion-induced damage in concrete occurred in all bridges except the Dry Creek Bridge, which is relatively new. The degree of corrosion is quite high. Nine other bridges with different corrosion protection systems were inspected to study the effectiveness of these protection methods.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/93325/dot_93325_DS1.pdf
• File Type:
  [PDF - 5.67 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:59b5903cfe833a7a20572292dceb2bf5be7587cc85f2f1ddb4624fdcf668a02322387aff15616f469e1644a355489db06b98280038505cbab67cfb99fa07eab3