EVALUATION OF ANODES FOR GALVANIC CATHODIC PROTECTION OF PRESTRES CONCRETE PILES IN THE TIDEWATER AREA OF VIRGINIA

Many of the bridge decks crossing the coastal water of Virginia's Tidewater Area are supported by prestressed concrete piles. In th last several years, many of those piles with corroding reinforcem were grout jacketed; however, this practice has not been successf in halting corrosion. It is now recognized that application of cathodic protection is the only rehabilitation measure that will truly prevent or stop corrosion of the prestressing steel tendons And, for this application, the galvanic mode of cathodic protecti or prevention, depending on the stage of corrosion, is particular suitable and advantageous. Recent advances in the development of galvanic anodes and methods of installation make it practical to galvanic mode of CP to protect these substructures. In order to evaluate the use of galvanic CP, the Virginia Department of Transportation has applied four galvanic anode systems to selecte piles of the Willoughby Bay Bridge of Interstate 64 in Norfolk, Virginia. The systems being tested are: (1) an aluminum-zinc-indi alloy applied by thermal spray; (2) a zinc sheet with conductive adhesive backing for application above the splash zone; (3) a zin mesh/grout-filled jacket and (4) zinc mesh with compression panel applied in the splash zone. This report presents the findings to date. For the covering abstract see ITRD E117314.

• Corporate Authors:

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Clemena, G G
  • Young, W T
  • Funahashi, M
  • Jackson, D R
• Conference:
  • PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON CORROSION AND REHABILITATION OF REINFORCED CONCRETE STRUCTURES HELD 7-11 DECEMB 1998, ORLANDO, FLORIDA, USA
• Publication Date: 1999

Language

• English

Media Info

• Features: References;
• Pagination: 16 p.

Subject/Index Terms

• TRT Terms: Alloys; Anodes; Bridge decks; Bridges; Cathodes; Conferences; Corrosion; Electrolysis; Metals; Prestressed concrete; Prevention; Seas
• Geographic Terms: United States
• ITRD Terms: 4532: Alloy; 3455: Bridge; 3482: Bridge deck; 8525: Conference; 5252: Corrosion; 6951: Electrode; 7135: Electrolysis; 4543: Metal; 4796: Prestressed concrete; 9149: Prevention; 4368: Sea; 8122: USA
• Subject Areas: Bridges and other structures; Security and Emergencies;

Filing Info

• Accession Number: 00943268
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, , USDOT
• Created Date: Jun 11 2004 12:00AM