EFFECTIVENESS OF REPAIR OF REINFORCEMENT CORROSION IN A MOTORWAY VIADUCT . PROCEEDINGS OF 3RD INTERNATIOAL CONFERENCE ON DETERIORATION AND REPAIR OF REINFORCED CONCRETE IN THE ARABIAN GULF, BAHRAIN, OCTOBER 21-24 1989. VOLUME 1.
The substructure of a six span motorway viaduct was repaired after 20 years exposure to chloride de-icing salts. Reinforcement corrosion was active in crossbeams and columns and rust staining, cracking, delamination and spalling were widespread. Half-cell potentials were mapped over a limited area of the substructure before repair and at intervals subsequently. These data show that corrosive activity had been significantly reduced in repaired areas, at least initially, but that some corrosion had continued. Outside the repaired areas, corrosion had continued undetected and new anodes had formed. The results show that repair of only visible defects and delamination is not sufficient in chloride contaminated concrete.(A) For the covering abstract of the conference see IRRD 828897.
BAHRAIN SOCIETY OF ENGINEERSPO BOX 835
- Thompson, D M
- Publication Date: 1989
- Pagination: p. 157-171
- Publication of: BAHRAIN SOCIETY OF ENGINEERS
- Publisher: BAHRAIN SOCIETY OF ENGINEERS
- TRT Terms: Bridges; Chlorides; Conferences; Corrosion; Evaluation and assessment; Freeways; Reinforced concrete; Repairing
- Subject Areas: Bridges and other structures; Highways;
- Accession Number: 00604083
- Record Type: Publication
- Source Agency: Transport and Road Research Laboratory (TRRL)
- Files: ITRD, TRIS
- Created Date: Feb 28 1991 12:00AM