THE CHARACTERIZATION OF PAVEMENT LAYER INTERFACES

The aim of this research was to derive constitutive models for the interfaces of flexible pavement layers and to determine the effects of interface condition on pavement performance. A simple constitutive model was derived for the asphalt layer interfaces using data provided by laboratory direct shear tests at several normal load levels. In the model the shear displacement is proportional to the shear stress until the shear strength of the interface is reached. Field shear tests at several levels of normal load were used to study the bond between asphalt surface layers and granular or soil-cement bases. The interface constitutive models were integrated into the ABAQUS finite element model to prove the significant impact of the interface condition on pavement life.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  International Society for Asphalt Pavements

  400 Selby Avenue, Suite 1
  St. Paul, MN  United States  55102
• Authors:
  • Romanoschi, Stefan A
  • Metcalf, J B
• Conference:
  • Ninth International Conference on Asphalt Pavements
  • Location: Copenhagen, Denmark
  • Date: 2002-8-17 to 2002-8-22
• Publication Date: 2002-8

Language

• English

Media Info

• Pagination: 18p

Subject/Index Terms

• TRT Terms: Base course (Pavements); Finite element method; Flexible pavements; Interfaces; Laboratory tests; Life cycle analysis; Load factor; Pavement layers; Shear strength; Shear stress; Shear tests
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00936410
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 24 2003 12:00AM