The factors which affect bituminous surfacings are briefly described: traffic, excess loads, atmospheric agents and ageing of bituminous products. All these influence deformation and failure of the surfacing. A solution is presented to the problem of shear of the affected layers along the whole of the damaged length and two types of cutting machine are described; hot and cold and their respective advantages and disadvantages are studied. Hot shearing has the advantage of softening the bitumen, which facilitates the removal of the material; the disadvantage results from the fact that the hot-shearing machine is more complicated, slower and cannot work under unfavourable atmospheric conditions. Cold shearing has the disadvantage of excessive wear of the cutting teeth, but the advantages are numerous: easy to manipulate, teeth easily replaced, usable under all atmospheric conditions, no contamination, high efficiency and rate of shearing, manoeuvrability on roads and finally large depth of cut (10 cm) for each pass. In addition, it can be utilised for other types of surfacing, such as concrete. It is concluded that cold cutting machines are more economic per square metre of surface. /TRRL/

  • Supplemental Notes:
    • ATEMCOP: Asociation Espanola de Tecnicos de Maquinaria para la Construccion y Obras Publicas.
  • Corporate Authors:

    Spanish Assn of Mach Tech for Constr & Pub Works

    Calle Cruz del Sur 2
    Madrid-30,   Spain 


    Cruz del sur 3
    Madrid 30,   Spain 
  • Authors:
    • Gutierrez, S A
  • Publication Date: 1976-4


  • Spanish

Media Info

  • Features: Photos; Tables;
  • Pagination: p. 44-47
  • Serial:
    • Issue Number: 66
    • Publisher: Asoc Espanola Tec Maquinaria Construc Obras Publ

Subject/Index Terms

Filing Info

  • Accession Number: 00184049
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Dec 29 1978 12:00AM