FRP Application in Underwater Repair of Corroded Piles


  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: FRP Application in Underwater Repair of Corroded Piles

Author(s): R. Sen, G. Mullins, K. Suh, and D. Winters

Publication: Special Publication

Volume: 230


Appears on pages(s): 1139-1156

Keywords: corrosion; FRP; instrumentation; piles; repair; underwater

Date: 10/1/2005

The poor durability of conventional corrosion repairs has led to increasedinterest for its replacement by fiber reinforced polymers (FRP). Over the past decade,several highway agencies completed demonstration projects in which FRP was used torepair corrosion damage on surfaces that were dry. These repairs have held up well andshow little sign of deterioration. The availability of resins that can cure in water hasmade it possible to explore the application of FRP for the underwater repair ofcorrosion-damaged piles. This paper presents findings from three demonstrationprojects in which corroding reinforced and prestressed piles at two contrastinglocations were repaired using two different FRP systems. Several piles wereinstrumented to allow long-term corrosion monitoring. The projects confirm thefeasibility of conducting underwater FRP repairs in tidal waters. Preliminary datasuggests that the wrap leads to a reduction in the prevailing corrosion rate.