3-D Distinct Element Modeling for Viscoelastic Asphalt Mastics

Based upon the micromechanical behavior of asphalt mastics, a viscoelastic model of asphalt mastics was developed using a discrete element modeling approach in this paper. The analytical solution is provided in order to compare the discrete element modeling solution. In the discrete element modeling approach, the Burgers contact model was employed and the uniaxial creep tests were simulated. In the simulation, three kinds of loading conditions were used. The constitutive equation based upon the Burgers model was introduced. The solutions under the creep and relaxation tests were given, respectively. At the end of this paper, the results based on the numerical simulations and analytical solutions were compared. It was found that the results from the two approaches agree with each other very well.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Hu, Xiaguang
  • Feng, Shirong
  • Liu, Yu
  • Tian, Li
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Appendices; Figures; References; Tables;
• Pagination: 24p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt mixtures; Asphalt pavements; Creep tests; Discrete element method; Numerical analysis; Relaxation tests
• Uncontrolled Terms: Burgers contact model; Micromechanical behavior; Numerical simulations
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01044213
• Record Type: Publication
• Report/Paper Numbers: 07-3015
• Files: TRIS, TRB
• Created Date: Feb 8 2007 7:44PM