INSTALLATION AND OPERATION OF TITANIUM ANODES FOR CATHODIC PROTECTION OF REINFORCEMENT BARS IN CONCRETE . PROCEEDINGS OF 3RD INTERNATIOAL CONFERENCE ON DETERIORATION AND REPAIR OF REINFORCED CONCRETE IN THE ARABIAN GULF, BAHRAIN, OCTOBER 21-24 1989. VOLUME 1.

This paper presents three case histories where titanium oxide anodes were installed to protect reinforced concrete rebars from corrosion. One of these was the installation of Heraeus Titanode R mesh onto the underside of a bridge. Inspection had revealed severe damage to the capping concrete of the bridge, with large areas of rusted reinforced steel around every support beam. The concrete covering on about 35 to 40% of the entire underside was less than 1.5 cm, and the depth of carbonation had already reached 12 to 13 mm. The lowest layer of reinforcing bars were damaged over their whole circumference, and had a concrete covering of only a few millimetres. The second layer of reinforcement had a covering of between 20 and 30 mm, with slight rusting in places, and the third layer, which showed no corrosion damage, had a 30-35 mm concrete covering. Because the clearance of the bridge was already low, a cathodic protection method had to be used which required the mimimum thickness of gunite. Damaged concrete was removed by high pressure water jetting after sandblasting. After every application of gunite its shear strength was measured as stipulated in the ZTV Sib 87 specification. Other case histories include the cathodic protection of a crane rail column and of a salt storage elevator tower. For the covering abstract of the conference see IRRD 828897.

  • Corporate Authors:

    BAHRAIN SOCIETY OF ENGINEERS

    PO BOX 835
    Manama,   Bahrain 
  • Authors:
    • Kotowski, S
    • Busse, B
    • Bedel, R
  • Publication Date: 1989

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00604090
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Feb 28 1991 12:00AM