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

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 37-49
• Serial:
  • International Journal of Pavements
  • Volume: 9
  • Issue Number: 1-2-3
  • Publisher: University of Mississippi, University
  • ISSN: 1676-2797

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Compliance constant; Dynamic modulus of elasticity; Poisson ratio; Tension tests; Viscoelasticity
• Subject Areas: Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

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