THE ROUGHNESS OF SURFACINGS: CONCRETE WITH PRECOATED CHIPPINGS SPREAD ON THE SURFACE

LA RUGOSITE DES REVETEMENTS : LE BETON DE CIMENT CLOUTE

THE FIRST PART OF THIS ARTICLE DEFINES THE TWO FACTORS INFLUENCING ADHESION: MICRO- AND MACRO-TEXTURE. THE TECHNIQUES TO USE WHEN LAYING COARSE MACRO-TEXTURE SURFACINGS ARE REVIEWED. SUCH A MACROTEXTURE FOR CONCRETE CAN BE OBTAINED BY TRANSVERSE GROOVING, STRIPPING OF THE MORTAR OR SPREADING OF PRECOATED CHIPPINGS. PART 2 DEALS WITH THE SPREADING OF PRECOATED CHIPPINGS. AFTER THE SATISFACTORY RESULTS OBTAINED ON SECTIONS TREATED MANUALLY IN 1950 AND 1969, THE CENTRE DE RECHERCHES ROUTIERES SET UP A COOPERATION WITH A CONSTRUCTION MACHINERY MANUFACTURER, WITH A VIEW TO PRODUCING A PROTOTYPE ABLE TO SPREAD AND IMBED THE CHIPPINGS. THE OPERATION OF AND VARIOUS POSSIBILITIES OFFERED BY THE MACHINE ALREADY OPERATIONAL ON FIXED FORM PAVERS, ARE DESCRIBED. RECOMMENDATIONS ARE GIVEN FOR SATISFACTORY RESULTS. THE SPREADING OF PRECOATED CHIPPINGS HAS TWO MARKED ADVANTAGES OVER THE OTHER TWO TECHNIQUES: (1) POSSIBILITY OF USING AGGREGATES WHICH CAN BECOME POLISHED THROUGHOUT THE SURFACING WITHOUT A LOSS OF ADHESION (AN ECONOMIC ADVANTAGE IN SOME REGIONS), AND (2) THE POSSIBILITY OF OBTAINING HIGH ADHESION AT SPECIFIC LOCATIONS OR ON HIGHLY-TRAFFICKED ROADS FOR A LOW-COST PRICE.

Language

  • French
  • Dutch

Media Info

  • Pagination: 1-20
  • Serial:
    • TECH ROUT
    • Volume: 20
    • Issue Number: 4
    • ISSN: 0040-1277

Subject/Index Terms

Filing Info

  • Accession Number: 01302450
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 8:40AM