Material Viscoelasticity Of Asphalt Mixture Model Of The Temperature Effect And Its Application

Asphalt mixture is a typical heterogeneous viscoelastic composites. Widely usedin pavement construction, especially in highway and municipal road pavementconstruction. Asphalt pavement is often difficult controlling diseases, such as: crack,rutting, hug and so on diseases. The study confirmed: by the viscoelastic mechanicalproperties of asphalt mixture, to reveal the mechanism of asphalt mixture, to revealthe damage of the asphalt pavement. The viscoelastic mechanical model of asphaltmixture is an important research content of viscoelasticity of asphalt mixture.In this study,experimental and engineering on the basis of past, established aconsidering temperature effect of viscoelastic model. Asphalt mixture with increasingtemperature viscosity enhancement and elasticity. On the other hand, with thedecrease of temperature and viscosity decreased elasticity enhancement. In this study,the traditional Burgers model as an example, consider the temperature effect on theasphalt mixture, established a new viscoelastic mechanical model of TE-Burgersmodel.Using the experimental data in the present research,the viscoelastic parameters ofTE-Burgers model. Comparative analysis in the four different temperature under theTE-Burgers model and the Burgers model and the experimental data fitting. Theresults show that: the TE-Burgers model of viscoelastic mechanics properties ofasphalt mixture is very good, has the better fit than the Burgers model. Finally usingTE-Burgers model and Burgers model as the asphalt mixture viscoelastic materialmodel,use ABAQUS software to establish the microstructure model of asphalt andaggregate. Analysis of the crack displacement of micro interface of asphaltmixture,the crack tip in the J integral. The TE-burgers model of J integral value is lessthan Burgers model of J integral value. It shows that TE-burgers at the cracking modelof energy released by less than the energy released by Burgers model. At the sametime indicates that the TE-burgers model is easy to crack than the Burgers modelunder the same conditions, provide a new theoretical model for further study ofasphalt mixture crack.