Corrosion Monitoring of FRP Repaired Piles in Tidal Waters


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Title: Corrosion Monitoring of FRP Repaired Piles in Tidal Waters

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

Publication: Special Publication

Volume: 252


Appears on pages(s): 137-156

Keywords: corrosion; FRP; galvanic current; linear polarization; piles; tidal waters

Date: 3/1/2008

This paper provides an overview of three different instrumentation schemes used to monitor long term performance of FRP repaired piles in tidal waters. These schemes were evaluated in four demonstration projects extending nearly five years. Two of these used linear polarization to estimate the corrosion rate while the third focused on the variation in the corrosion current. Problems associated with selection, installation and monitoring are described and representative results presented from all three systems. The results suggest data from linear polarization is more consistent. Findings indicate FRP wrapping lowers the prevailing corrosion rate.