PRECAST, PRESTRESSED CONCRETE FOR BRIDGE DECKS

THE OBJECT WAS TO DEVELOP A BRIDGE DECK UNIT THAT COULD REPLACE A DETERIORATED DECK IN THE SHORTEST TIME. INHERENT IN THE PRECAST CONSTRUCTION IS THE QUALITY CONTROL FACTOR FOR MIXING AND PLACING CONCRETE. LABORATORY TESTS DEVELOPED A SLAB 6 INCHES THICK AND 4 FEET WIDE PRESTRESSED ALONG ITS LONGITUDINAL AXIS. THE BUTTING JOINT THAT PRODUCED THE LOWEST STRESS CONCENTRATION PROVED TO BE A FLAT TONGUE-AND-GROOVE JOINT SEPARATED BY A 1/16-INCH NEOPRENE PAD. A CAULKING SEALANT WAS PLACED IN THE TOP SURFACE OF THE JOINT TO MAKE THE JOINT WATERPROOF. TO PROVIDE CONTINUITY BETWEEN THE SLAB AND SUPPORTING BEAMS, A HOLD-DOWN DEVICE USED BY ASSOCIATION OF AMERICAN RAILROADS TO FASTEN RAILS TO PRECAST CONCRETE TIES WAS TESTED AND USED. ACTUAL FIELD INSTALLATIONS ARE NOW BEING OBSERVED AND STRESS MONITORED WITH SATISFACTORY SUCCESS. /FHWA/

  • Corporate Authors:

    Purdue University/Indiana Department of Transportation JHRP

    Purdue University, School of Civil Engineering
    West Lafayette, IN  United States  47907-1284

    Indiana State Highway Commission

    Indianapolis, IN  United States  46204

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Gutzwiller, M J
    • Lee, R H
    • Scholer, C F
  • Publication Date: 1970-7

Subject/Index Terms

Filing Info

  • Accession Number: 00212095
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Mar 7 1971 12:00AM