AGGREGATE INTERLOCK IN ASPHALT

AGGREGATE INTERLOCK IN ASFALT

This paper presents the first results of research on aggregate interlock in asphaltic concrete. First, the occurring mechanisms of this phenomenon are discussed. Based on this the elementary stiffness matrix is presented, which is necessary for the description of the locking of cracks in a finite element model. In order to obtain data for this stiffness matrix a test set-up was developed, which is described. From monotonic tests on a gravel asphaltic concrete mix 4/16 it was concluded, that the normal stress at a crack has a significant effect on both shear strength and shear stiffness. The rate effect on these parameters is less pronounced. A load controlled cyclic test showed that the shear stiffness until failure of the test specimen gradually decreases, and that the initial crack width increases. For the covering abstract of the conference see IRRD 867688.

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  • Corporate Authors:

    CENTRUM VOOR REGELGEVING EN ONDERZOEK IN DE GROND-, WATER- EN WEGENBOUW EN DE VERKEERSTECHNIEK (CROW)

    GALVANISTRAAT 1
    EDE,   Netherlands  6716 AE
  • Authors:
    • DE BONDT, A H
    • Scarpas, A
    • STEENVOORDEN, M P
  • Publication Date: 1994-3

Language

  • Dutch

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00674663
  • Record Type: Publication
  • Source Agency: DIENST WEG- EN WATERBOUWKUNDE (DWW)
  • ISBN: 90-6628-168-5
  • Files: ITRD
  • Created Date: Mar 8 1995 12:00AM