A Study of the Use of the Poisson's Ratio as a Constitutive Parameter for Viscoelastic Analysis of Asphaltic Mixtures

A study of the use of the Poisson's ratio as a constitutive parameter for asphalt mixtures is presented. The literature review shows that experimental results of Poisson's ratio in asphalt mixes are very scattered and are also stress/load dependent. Experimental evidences show the impossibility to obtain a constant Poisson's ratio for viscoelastic materials, and a mathematical treatment of the problem shows that the viscoelastic Poisson's ratio is time-dependent, path-dependent, and impossible to use in the correspondence principle. The substitution of the use of Poisson's ratio for the use of the compliances C11(t) and C12(t) as constitutive parameters is proposed, and the experimental and theoretical advantages shown. Dynamic modulus and Indirect Tensile Tests were simulated, comparing displacements using C11(t) and C12(t), and C11(t) and constant Poisson's ratio. Using C11(t) and C12(t) increased the degree of viscoelasticity in the material on both simulated tests. Such behavior depends on the temperature, which was also verified.

  • Availability:
  • Authors:
    • Theisen, Klaus Machado
    • Ceratti, Jorge Augusto Pereira
    • Al-Qadi, Imad L
  • Publication Date: 2010


  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 37-49
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 01383480
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 22 2012 3:36PM