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Linear and nonlinear fractional hereditary constitutive laws of asphalt mixtures
oleh: Gaetano Di Mino, Gordon Airey, Mario Di Paola, Francesco Paolo Pinnola, Giacomo D’Angelo, Davide Lo Presti
Format: | Article |
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Diterbitkan: | Vilnius Gediminas Technical University 2016-07-01 |
Deskripsi
The aim of this paper is to propose a fractional viscoelastic and viscoplastic model of asphalt mixtures using experimental data of several tests such as creep and creep recovery performed at different temperatures and at different stress levels. From a best fitting procedure it is shown that both the creep one and recovery curve follow a power law model. It is shown that the suitable model for asphalt mixtures is a dashpot and a fractional element arranged in series. The proposed model is also available outside of the linear domain but in this case the parameters of the model depend on the stress level.