CONCRETE-DECK DETERIORATION: CONCRETE-FILLED STEEL-GRID BRIDGE DECKS HAVE THE ANSWER

The most common cause of bridge-deck distress is the corrosion of the reinforcing steel that results from the intrusion of chlorides into the concrete after repeated deicer applications. However, there are many concrete-filled steel-grid bridge decks in existence that have not been affected by deicing chemicals, although the amount of chloride present is significant and sufficient to initiate steel corrosion. Data on more than about 400,000 sq m (4,000,000 sq ft) of grid decks built between 1931 and 1969 showed that the performance of such decks has been excellent. The soundness of the concrete has not been affected, and the steel within the concrete shows no rust or corrosion. These decks have withstood severe weather conditions and frequent use of deicing chemicals. The satisfactory condition of these grid decks, in service for over 40 years, is significant evidence of their durability, which has been accomplished without the help of waterproofing membranes, coatings on steel, cathodic protection, or other treatments designed to prolong bridge-deck life. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 11-16
  • Monograph Title: Concrete, aggregates, marking materials, corrosion, and joint seals
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00183524
  • Record Type: Publication
  • ISBN: 0309026806
  • Files: TRIS, TRB
  • Created Date: Dec 12 1978 12:00AM