ABSTRACT
The design of slender and lightweight constructions made of ultra-high performance fibre-reinforced concrete leads to an increased susceptibility to oscillations. In order to estimate and predict the fatigue behaviour of this composite, especially the bond behaviour of the components steel fibre and concrete matrix has to be investigated experimentally and numerically on the mesoscale. In this contribution, first findings concerning the evaluation and micro-structure related modelling of single-fibre pull-out tests are presented. The identification of the main bond mechanisms and their impact on the pull-out resistance is used to analyse the degradation behaviour of the bond zone according to relative displacements. A first outlook regarding cyclic degradation processes is given.
