BONDED CONCRETE BRIDGE PAVEMENTS IN SWITZERLAND

Bonded cement concrete pavements have been successfully constructed on more than 150 long, medium, and short bridges in Switzerland during the past 15 years. Traffic in Switzerland never rolls directly over the bridge structure (the deck) but always over a bridge pavement (overlay) instead. The concrete used in bridge construction is generally not proof against combined frost-thaw-salt action. The abundant use of deicing chemicals in winter increases the risks of damage to structural concrete and steel reinforcement. In addition, today's road traffic (a) subjects carriageways to horizontal shearing forces, (b) demands high standard riding quality of pavements, and (c) results in pavement wear caused by abrasion (pronounced wear in the case of studded tires). The criteria required of bonded concrete bridge pavements in Switzerland are presented. The results of on-site measurements taken on 13 test bridges prove that (a) crack-free bonded pavements perceptibly increase the bending stiffness of bridges and (b) use of bonded concrete pavement allows economies in longitudinal steel reinforcement of 7 percent or more depending on the bending stiffness of the bridge and up to 40 percent in transverse reinforcement if the pavement is fully bonded to the bridge deck. Rules to be followed in construction of such bridge-deck pavements are also given. /Author/

Media Info

  • Media Type: Print
  • Features: Figures; Photos; References; Tables;
  • Pagination: pp 21-27
  • Monograph Title: Construction and quality control of pavements and structures
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00184207
  • Record Type: Publication
  • ISBN: 03026814
  • Files: TRIS, TRB
  • Created Date: Dec 29 2000 12:00AM