ABSTRACT
ABSTRACT: Thousands of bridge structures rely on grouted post-tensioning (PT) tendons. Problems with grouting techniques and grout materials has resulted in bridges with grout voids, chloride contaminated grout and soft grout. These problems have promoted corrosion and failure of PT tendons, some within 6 to 17 years of service. The Florida Department of Transportation (FDOT) has spent more than $55 million (USD) repairing 11 post-tensioned bridges to date. A cost-effective corrosion mitigation technique has been developed to minimize the corrosion of PT tendons and extend the service life of bridges which have grout issues. This paper describes the development and implementation of this technique on grouted PT tendons in segmental bridges, including the Ringling Bridge (Sarasota, FL), the I-95/I-295 Interchange in Jacksonville, FL and the I-4 Connector in Tampa, FL.
