2013•Highway EngineeringRequires access

Research on Nonlinear Prediction of Asphalt Aging

Hu Jianrong

Abstract

In allusion to the drawback of asphalt and oxygen aging research,SK90#asphalt was test by rotating thin film oven test in different RTFOT time,and needle penetration,softening point,ductility and viscosity of asphalt sample was test after then.Nonlinear prediction of asphalt aging was established according to the esperimental result.The results show that the discipline of asphalt aging accord with nonlinear equation of math.Needle penetration,softening point,ductility and viscosity of asphalt in different aging could be forecast by this nonlinear equation,and at the same time,aging rate could also be calculated by it.Another conclusion was there exist an equilibrium value in asphalt aging.

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Key concepts: Asphalt, Softening point, Materials science, Nonlinear system, Asphalt concrete, Penetration (warfare), Composite material, Ductility (Earth science)