Fatigue behaviour of Ultra High Performance Concrete (UHPC) under cyclic loading at a compressive-tensile stress range

摘要

In this article research on the fatigue behaviour of Ultra High Performance Concrete (UHPC) under cyclic loading at TU Miinchen is shown. Due to the slenderness of UHPC-structures the fatigue performance gains outstanding importance. High compressive strength in comparison to small tensile strength of UHPC requires prestressing. In service cyclic loading in compressive-tensile stress range can occur. In classical S-N-curves the effects of relevant parameters on the fatigue behaviour of UHPC are shown, e.g. stress variation and mean stress, fibre ratio, fibre orientation and heat treatment.