LABORATORY PERFORMANCE EVALUATION OF MODIFIED ASPHALT MIXTURES FOR INCHON AIRPORT PAVEMENTS

This paper evaluates the fatigue and rutting characteristics of various modified and unmodified asphalt mixtures using uniaxial tension and triaxial compression cyclic tests, respectively. The fatigue and healing behavior of the mixes is presented by means of the viscoelastic, continuum damage (VCD) model developed by the authors. Coefficients in the classical model are described in terms of fundamental material properties and test conditions in the VCD model. The explicit form of the VCD model and different performance data from all the mixes are used to investigate the effects of the material properties on the fatigue life and microdamage healing potential of asphalt concrete. Structural analysis based on the multilayered elastic theory is conducted to compare fatigue lives of the various mixes in pavement systems. A simple permanent deformation model that correlates vertical permanent strain and number of applied loads is used to represent the data from the triaxial compression tests at different confining pressures. Results are presented and discussed.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00796014
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 16 2000 12:00AM