The National Academies

NCHRP 24-10 [Completed]

Thermally Sprayed Metallic Coatings to Protect Steel Pilings

  Project Data
Funds: $350,000
Research Agency: Ocean City Research Corporation
Principal Investigator: James A. Ellor, Walter T. Young, and John Repp
Effective Date: 7/2/1999
Completion Date: 1/31/2009

Thermally sprayed metallic coatings (TSMCs) are available as alloys of combinations of base metals, such as aluminum and zinc. TSMCs can offer substantial advantages when compared with other types of coatings commonly used to protect steel pilings, primarily because of their favorable resistance to corrosion and handling damage. However, available publications do not provide sufficient guidance for highway agency personnel on the materials and use of TSMC for steel pilings. Without this information, there is reluctance to use this technology.

The research conducted under this project resulted in the development of a guide that addresses the application of thermally sprayed metallic coatings for the protection of new steel pilings in immersion and splash zones. The findings of this research are presented in NCHRP Report 528, "Thermally Sprayed Metal Coatings to Protect Steel Pilings: Final Report and Guide." NCHRP Report 528 consists of two documents: (1) a final report documenting the entire research effort and (2) a guide for application of thermally sprayed metal coatings to protect steel pilings from corrosion. 

 NCHRP Report 528: Thermally Sprayed Metal Coatings to Protect Steel Pilings: Final Report and Guide is available through the TRB website
. NCHRP Research Results Digest 344: Thermally Sprayed Metallic Coatings to Protect Steel Pilings: 5-Year Performance Update presents the results of NCHRP Project 24-10(02), which evaluated the performance of several types of thermally sprayed metallic coating applied over steel in accordance with NCHRP Report 528 and immersed in seawater in a controlled, 5-year experiment.

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