Bituminous asphalt concrete: Aspects on scale-bridging

This paper will give a short overview about a multi-scale modelling approach for bituminous asphalt concrete. The goal is to describe the micro-heterogeneous medium by a homogeneous surrogate medium, which has similar effective mechanical properties. Starting from the varying constitutive behaviour on the micro-scale, our up-scaling procedure is realised via volume averaging techniques. By use of a Finite-Element model, the results for different types of boundary conditions (BCs) and their influence on the properties of the compund are investigated on the effective scale. (© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim)