The American Association of State Highway and Transportation Officials recently published the first edition of Guidelines for Corrosion Protection of Steel Bridges Using Duplex Coating Systems – a system for painting over metallic coatings.
[Above image by AASHTO]
AASHTO said these guidelines provide bridge engineers and owners with information on best practices on the application of duplex coating systems to extend the service life of steel bridges.
The use of the two methods provides a synergistic effect that, when done well, can increase confidence in a positive life-cycle value of these systems and multiply the individual service life of each coating exceeding the sum of each of their individual service lives, the organization noted.
These guidelines are designed to complement AASHTO’s Guide Specification for Service Life Design of Highway Bridges, 1st Edition, (Item Code: HBSLD-1), and AASHTO-National Steel Bridge Alliance Hot-Dip Galvanizing Specification, S8.3-2022 (Item Code: NSBAHD-1).
To order a copy, visit the online AASHTO Store and search by item code GCPS-1or click here for a direct link to the publication’s web site.
