By means of a dynamic fatigue loading test rig it was possible to simulate, by constantly repeated movements, the same stress and strain patterns with a sample of roadbase as would have been produced by moving vehicle wheels within a pavement. The loading conditions and, as far as was possible, the environmental conditions were kept constant during the period of the test. The aims and results of the research commission fell into three categories. (1) research into the reactions (e.g. permanent and temporary deformation, resulting from the applied forces); the connection between permanent and temporary deformation respectively and the load values as well as the load transition is given as a function. (2) Investigation into the internal consequences (changes in density, disturbance of minerals etc). In order to investigate the internal changes an experimental road was developed and dismantled. Tests on the excavated material showed no fundamental changes, simply a polishing of the bituminous wearing course through the 10 mp loading was reported. (3) Detection of a transfer function between the results of the BAST and the Technical University of Hanover. The correlation analysis showed a strong linear connection between the results. By means of a regression calculation the transfer functions were found. /TRRL/

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  • Corporate Authors:

    Bundesminister fuer Verkehr

    Kennedy Allee Number 72
    5300 Bonn,   Germany 
  • Authors:
    • David, M
  • Publication Date: 0


  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00195179
  • Record Type: Publication
  • Source Agency: Bundesanstalt für Straßenwesen (BASt)
  • Report/Paper Numbers: MONOGRAPH
  • Files: ITRD, TRIS
  • Created Date: Aug 28 1979 12:00AM