JOINT-FREE EXPERIMENTAL PRESTRESSED PAVEMENT

THIS ARTICLE REPORTS ON SUCESSFUL PERFORMANCE IN BELGIUM OF AN EXPERIMENTAL 1150 FT. LONG (350 M) PAVEMENT SLAB PRESTRESSED BETWEEN ABUTMENTS. CONCRETE WITH A LOW COEFFICIENT OF THERMAL EXPANSION (ABOUT HALF THAT OF CONVENTIONAL MIXES) WAS USED TO LIMIT STRESS VARIATIONS DUE TO TEMPERATURE CHANGE. PRESTRESS LOSSES WERE MINIMIZED BY EARLY STRESSING TO ELIMINATE CREEP, AND A SLIDING LAYER WAS PROVIDED TO REDUCE FRICTION BETWEEN SLAB AND SUBGRADE. COMPLETE ELIMINATION OF THE LONGITUDINAL JOINT HAS CAUSED ONLY MINOR CRACKING IN PART OF THE ROAD. /AUTHOR/

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  • Accession Number: 00214119
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 23 1972 12:00AM