HOME MyTRB CONTACT US DIRECTORY E-NEWSLETTER FOLLOW US RSS


The National Academies

NCHRP 10-94 [Completed]

Mitigation of Weldment Cracking of Highway Steel Structures due to the Galvanizing Process

  Project Data
Funds: $499,975
Research Agency: The University of Kansas
Principal Investigator: Jian Li
Effective Date: 7/1/2014
Completion Date: 3/31/2020

BACKGROUND: Structural supports for signs, luminaires, and traffic signals and other highway steel structures are generally galvanized to prevent corrosion and provide a long service life. However, recent investigations have revealed incidents of cracking in weldments of galvanized structures that appear to be induced during the galvanizing process. When placed in service, structures with such flaws will exhibit short service life and pose safety concerns. There was a need to identify the factors contributing to the occurrence of weldment cracking during the galvanizing process of steel highway structures and to propose improved design, materials, and construction specifications to help mitigate such cracking. This information will ensure that galvanized highway structures provide the intended service life and eliminate related safety concerns.
 
OBJECTIVE: The objective of this research was to propose improved design, materials, and construction specifications of galvanized steel highway structures to mitigate weldment cracking caused by the galvanizing process. This research was concerned with structural supports for signs, luminaires, and traffic signals and bridge superstructures (other than decks).
 
STATUS: Research is complete; publication decision is pending.

To create a link to this page, use this URL: http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3646