Spot Painting to Extend Highway Bridge Coating Life: Volume 2: Research Overview

Most bridge coatings tend to fail prematurely in localized areas. Spot painting can be used to repair those, which will restore the lost corrosion protection and extend the service lives of existing bridge coatings, often at a fraction of the cost of a complete bridge repainting. However, many state highway agencies do not perform spot painting primarily due to performance concerns and lack of familiarity with its proper utilization and execution. This research provides guidance to state highway agencies on best practices for employing spot painting in a cost-effective, safe, and environmentally compliant manner. It further provides a laboratory protocol for assessing candidate spot coating systems. It also demonstrates a spot painting method that could be applied by relatively inexperienced state highway agency bridge crews to affect spot repairs of damaged coatings on steel bridges using minimal procedures such as SSPC-SP 3, “Power Tool Cleaning” and brush application of liquid-applied coatings. Troweling and wall paper hanging procedures were used to apply the grease and tape respectively. Those methods are also amenable for adoption by state highway bridge crews.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Contractor's Final Report
  • Features: Appendices; Figures; References; Tables;
  • Pagination: 73p
  • Serial:
  • Publication flags:

    Open Access (libre)

Subject/Index Terms

Filing Info

  • Accession Number: 01666995
  • Record Type: Publication
  • ISBN: 9780309475044
  • Report/Paper Numbers: NCHRP Project 14-30
  • Files: TRIS, TRB, ATRI
  • Created Date: Apr 25 2018 8:23AM