EVOLUTION IN THE PROTECTION OF METAL BRIDGES AGAINST CORROSION

EVOLUTION DE LA PROTECTION ANTICORROSION DES PONTS METALLIQUES

The evolution in the protection of metal bridges against corrosion during the last five years was influenced by the following factors: (1) prohibition of the use of siliceous abrasives for preparing surfaces which meant that scouring had to be carried out in the factory (and not on site as previously) either just after rolling or in the workshop on finished structural elements. This can lead to long delays between the different applications and to problems of bonding and adhesion for the coats applied on the site; (2) development of paints with a high zinc content with an epoxy or organo-mineral binder instead of the conventional paint containing red lead and glycerophtalic oil or resin, mainly because the new paints are easy to apply and quick to dry; (3) gradual replacement of "bituminous" paints with paints containing coal tar pitch and epoxy resin for the protection of suspension bridge components (cables, suspension rods) and of the parts of the deck which are not visible; (4) adoption of brighter or lighter shades for the top coats of structures. This requires special care in the selection of pigments so that the colour does not change too quickly. /TRRL/

• Corporate Authors:

  Laboratoire Central des Ponts et Chausees (LCPC)

  Boulevard Lefebvre 58
  Paris Cedex 15,   France  F-75732
• Authors:
  • MEHUE, P
• Publication Date: 1977-1-2

Language

• French

Media Info

• Features: Photos;
• Pagination: p. 123-129
• Serial:
  • Bulletin de Liaison des Lab des Ponts et Chaussees
  • Issue Number: 87
  • Publisher: Laboratoire Central des Ponts et Chausees (LCPC)

Subject/Index Terms

• TRT Terms: Adhesion; Bonding; Bridge decks; Bridges; Coal tars; Coatings; Color; Corrosion; Corrosion protection; Development; Environmental protection; Epoxy resins; Legislation; Maintenance; Metal bridges; Metals; Minerals; Organic compounds; Paint; Pigments; Pitch (Dynamics); Pitch (Materials); Prevention; Protective coatings; Silicates; Steel bridges; Suspension bridges; Suspension cables; Zinc; Zinc coatings; Zinc rich paint
• Uncontrolled Terms: Bridge maintenance
• Old TRIS Terms: Pitch
• ITRD Terms: 3455: Bridge; 6784: Colour; 5252: Corrosion; 9013: Development; 7468: Epoxy resin; 1556: Legislation; 4543: Metal; 4051: Mineral; 7366: Organic; 3807: Paint; 4950: Pitch (mater); 9149: Prevention; 7303: Silicate; 7189: Zinc
• Subject Areas: Bridges and other structures; Environment; Geotechnology; Highways; Law; Maintenance and Preservation; Materials; Security and Emergencies; I35: Miscellaneous Materials;

Filing Info

• Accession Number: 00173058
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Apr 12 1978 12:00AM