Integrated Concrete Pier Piling Repair and Corrosion Protection System

This paper presents the current status and findings of the OSD AT&L, Director of Corrosion Policy and Oversight, FY05 project N-F-229, Integrated Concrete Pier Piling Repair And Corrosion Protection System.  Reinforced concrete pilings for Piers F12/13 at Ford Island in Pearl Harbor, Hawaii have suffered from significant corrosion of the steel reinforcing bar (rebar) resulting in the loss of load handling capacity due to spalling of the concrete that resulted from the corrosion of the rebar.  This project demonstrated an integrated concrete pile repair and corrosion protection system that will increase the service life of a pier to 20 years in contrast to only six to seven years if the pier pilings containing high chloride levels are only patched.