NATIONAL ROAD N3. WEESEN-MUEHLEHORN SECTION. MAINTENANCE OPERATIONS ON THE CONCRETE SURFACING

ROUTE NATIONALE N3 - TRONCON WEESEN-MUEHLEHORN - TRAVAUX D'ENTRETIEN DU REVETEMENT EN BETON

The autor describes the damage observed in 1975 after 12 years of service and the number of working hours necessary for repair. Details are given of the organization of the work, and of the causes of the damage and method of repair (mesh visible at the surface, scaling, spalling at joints, cracks in the slabs). Special mention is made of two materials used for repair: (1) ready-mixed embeco 411A mortar, mixed dry and containing cement. A simple addition of water gives a shrinkage-free mortar with quickly reached fairly high strength. This mortar is particularly suitable for small areas. (2) sakret concrete, dry mixed and ready-mixed, consisting of 0-20 mm aggregates and 400 kg/cu m aluminous cement; it hardens quickly and reaches a 50 n/m sq m strength at 24 hours and approximately 30 n/m cu m at 6 hours. It is suitable for repair to concrete surfacings especially when interruption of traffic should be as short as possible. (TRRL)

  • Authors:
    • Welti, R
  • Publication Date: 1977-4

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00309253
  • Record Type: Publication
  • Source Agency: Toronto University Press
  • Files: ITRD, TRIS
  • Created Date: Oct 27 1980 12:00AM