Six bridge decks were constructed in Virginia by using the two-course bonded technique. The wearing course layers consisted of a high-quality portland cement concrete, a wire-fiber-reinforced concrete, and latex-polymer-modified concrete. Analyses of construction activities, labor requirements, and cost are used to demonstrate the viability of two-course construction when additional protection of the upper reinforcing steel is warranted. It is shown that normal cover depths and an adequate degree of consolidation were attained in the two-course decks. The significantly better strenght of the overlay concretes, as compared to that of concrete placed on two conventional decks used as controls in the study, underscores the primary purposes of the two-course technique, which is to promote the placement of high-quality protective concretes in the upper cover zone of bridge decks. A basis for assessing the future performance of the decks was provided by evaluating them at the age of 1 year, before they were opened to traffic and before application of deicing salts. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 15-21
  • Monograph Title: Construction and quality control of pavements and structures
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00184206
  • Record Type: Publication
  • ISBN: 03026814
  • Files: TRIS, TRB
  • Created Date: Dec 29 1978 12:00AM