WIT Press

Modelling And Simulation Of The Rutting Resistance Of Bituminous Mixes: Experimental And Stochastic Approaches


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307 - 314




721 kb


A. E. Ouni, A. Dony & J. Colin


This work deals with the simulation of the rutting resistance of bituminous binders used in road pavement. First, the experimental protocol was assessed to simulate pavement traffic allowing the prediction of the rutting depth evolution versus cycle number of wheel passes under isothermal conditions. Then a probabilistic parametric approach was developed to take into account the different parameter uncertainties related to the changes in experimental conditions. We investigate through the stochastic approach the rutting sensitivity of bituminous mixes under traffic load. A confidence region of a high probability of 99% is defined to allow the prediction of the in situ rutting potential of bituminous specimens. Keywords: rutting, bitumen, uncertainties, stochastic. 1 Introduction The environment protection has been and continues to be the major concern of the road politics in industrialized countries. With the signature of the Kyoto protocol agreement, the European Union is involved to reduce the energy consumption and the resulting greenhouse gases emissions [1]. The warm mix asphalt (WMA) is a promising technology which has been developed to contribute to the protection of the environment and sustainable development program [2–5]. The WMA is a mixture of mineral aggregates and bitumen produced and placed on the road at a lower temperature comparing to the traditional hot mix asphalt (HMA). Reductions in temperature of 20-50°C have


rutting, bitumen, uncertainties, stochastic