INCREASING DURABILITY OF DECKS USING CLASS HP CONCRETE

Historically, bridge decks constructed of Class E and H concrete mixtures developed by the New York State Department of Transportation have had a propensity for spalling and cracking due to reinforcing bar corrosion attributed to the infiltration of deicing salts used in winter highway maintenance. To deal with this problem, a Bridge Deck Task Force was formed with the aim of increasing the service life of New York's bridge decks. The Task Force determined that significant improvement would result from a concrete mixture that reduced permeability and the potential for cracking. This new mixture, a variation of Class H concrete designated as Class HP, has a reduced water-cement ratio and includes 2 pozzolanic substitutions for a portion of the portland cement. This paper describes the results of a study that compared the performance and durability of bridge decks constructed of the Class HP concrete mixture to those using other concrete mixtures.

Language

  • English

Media Info

  • Features: References; Tables;
  • Pagination: p. 33-35
  • Serial:
    • Concrete International
    • Volume: 22
    • Issue Number: 7
    • Publisher: American Concrete Institute (ACI)
    • ISSN: 0162-4075

Subject/Index Terms

Filing Info

  • Accession Number: 00797644
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 15 2000 12:00AM