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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/4163061
• Corporate Authors:

  American Concrete Institute (ACI)

  38800 Country Club Drive
  Farmington Hills, MI  United States  48331
• Authors:
  • Alampalli, S
  • Owens, F
• Publication Date: 2000-7

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

• TRT Terms: Admixtures; Bridge decks; Bridges; Concrete construction; Cracking of concrete pavements; Deicing chemicals; Durability; Highway transportation; Permeability; Portland cement concrete; Pozzolan; Service life; Spalling; State departments of transportation; Winter maintenance
• Geographic Terms: New York (State)
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

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