It is the aim to develop light and efficient structures by dividing the force flow into compression and tension and assign these to the appropriate materials - pressure to concrete and tension to reinforcement. A first step to reach this goal is to numerically and experimentally investigate the bending load bearing capacity of sandwich elements made of modern high performance concretes (compressive zone), a lightweight core layer and steel or textile reinforcements (tensile zone). This paper presents a numerical, nonlinear analysis of a single-span sandwich element and indicates the potential of weight reduction based on the effective application of different concretes.
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