EVALUATION OF HIGHWAY CULVERT COATING PERFORMANCE

The objective of this study was to evaluate the performance of coatings for highway culverts and to recommend methods of improving culvert service life through improved coating systems and other means. A literature search was conducted through a review of technical literature and interviews with cognizant state officials throughout the United States. The literature search revealed durability problems with the most commonly used materials and coatings. Corrosion and erosion of interior surfaces appear to be the most serious durability problems in most states. Field investigations conducted in nine states confirmed the findings of the literature search. Most coatings exhibit durability problems under conditions of abrasive bed load and extreme corrosivity. Coating types examined at various test sites and actual drainage installations include: asphalt, asbestos bonded asphalt, asphalt paving, coal tar laminate, polyethylene, PVC, vinyl plastisol, aluminized, aluminum - zinc and epoxy coated concrete. The best overall coating appears to be asphalt coated and paved asbestos bonded galvanized steel, although significant deterioration is probable with this coating under certain conditions. Organic coatings applied to local areas where needed might be more cost effective than present complete coating methods. Other coatings and methods of protection are suggested which might be superior to existing coatings. Many of these alternative methods are more costly than existing coatings and their benefits are not defined yet. Durability evaluations are needed to deterimine if their use is justified. A review of existing State culvert specifications and recommendations for improvement are included. An evaluation program is presented. (FHWA)

  • Corporate Authors:

    PSC Professional Service Group, Incorporated

    110 Essex Avenue
    Narberth, PA  USA  19072

    Federal Highway Administration

    Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Young, W T
  • Publication Date: 1980-6

Media Info

  • Pagination: 157 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00325378
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-80-059 Final Rpt., FCP 35I3-224
  • Contract Numbers: DOT-FH-11-9425
  • Files: TRIS, USDOT
  • Created Date: Apr 15 1981 12:00AM