Mathematical description of rheological properties of asphalt-aggregate mixes

• Autorzy: Zbiciak A.
• Języki publikacji: EN

Abstrakty

EN

The procedure of the formulation of constitutive equations for asphalt-aggregate mixes is based very often on rheological schemes composed of classical elastic, plastic and viscous elements. The parameters of these schemes can be obtained based on laboratory experiments. In order to obtain better curve fitting results one can use non-classical viscoelastic elements described by fractional derivatives. In this paper we present the characteristics of the fractional viscoelastic Huet-Sayegh model as well as the characteristics of an original simplified fractional model. The results have been obtained using algorithms of numerical calculation of inverse Laplace transforms. Then the proposal of an original rheological model including plasticity has been given. The non-linear differential constitutive relationships of such a model are presented in the paper. The results of computer simulations are also visualized. Finally, 3D viscoelasticplastic models of asphalt aggregatemixes are proposed. The models are based on a generalized macroscopic theory taking into account the effect of pressure-dependency on yielding.

Słowa kluczowe

EN

asphalt-aggregate mixes; rheological models; fractional derivatives; constitutive equations

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2013
• Tom: Vol. 61, nr 1
• Strony: 65--72
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Zbiciak A.

• Faculty of Civil Engineering, Institute of Roads and Bridges, Warsaw University of Technology, 16 Armii Ludowej Ave., 00-637 Warsaw, Poland

Bibliografia

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