FATIGUE OF BITUMINOUS MIXTURES

FATIGUE DES ENROBES BITUMINEUX

A review is presented of the different laboratory methods of studying the fatigue behaviour of bituminous mixtures: the alternate bending of an element with trapezoidal profile (LCPC, Ahell), rotary bending (CFE), alternate compression-tension (ESSO). Mention is made of the present knowledge of the fatigue mechanism of bituminous mixtures: law of constant stress behaviour (n sigma a = k1), law of constant deformation behaviour (n epsilon b = k2). The existence of a crack propagation time and the aptitude of bituminous mixtures to selfrepair led to the conclusion that laboratory conditions for simusoidal stress tests are too strict. The influence of formula parameters (such as bitumen type and content, aggregates, filler-bitumen ratio) on fatigue behaviour is recalled. An attempt is made at correlating the laboratory behaviour of bituminous mixtures with their content in the pavement, taking into account the rather simple and pessimistic nature of current laboratory studies. Fatigue programmed in the laboratory should be investigated as soon as possible. The covering abstract of the conference is IRRD abstract no. 101124. /TRRL/

  • Supplemental Notes:
    • Taken from Journees d'information bitumes et enrobes bitumine.
  • Corporate Authors:

    Laboratoire Central des Ponts et Chausees (LCPC)

    Boulevard Lefebvre 58
    Paris Cedex 15,   France  F-75732
  • Authors:
    • Chompton
    • Doan
    • Harlin
    • Kennel
  • Publication Date: 1972

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00125177
  • Record Type: Publication
  • Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Nov 18 1975 12:00AM