Nonlinear constititive model research of Guss Asphalt Concrete High Temperature Viscolastic Deformation Based on Dynamic Penetration Test
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Abstract:
Abstract:We get the viscoelastic constitutive model of high temperature deformation property about Guss Asphalt (GA) concrete used on the improved Burgers model,through Dynamic Penetration Test (DPT) to regress improved Burgers model parameters,verify model's applicability and reliability . The result shows that this model can reveal influent rule of model parameters and experimental parameters on high-temperature deformation of GA, also can predict the permanent deformation variation effectively under high temperature, DPT used can reflect the GA actual stress condition under the vehicle load more accurately, the high temperature deformation property of GA is sensitive to load time and temperature by DPT test under 50 ℃and 60 ℃,the deformation rate and permanent deformation are increasing with load time extension and external environment temperature increased.
