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P. Preinstorfer, J. Kollegger:
"Experimental and numerical investigations on the splitting failure of textile reinforced concrete";
Talk: fib symposium 2020, Shanghai, China; 2020-11-22 - 2020-11-24; in: "Concrete Structures for Resilient Society", fib, (2020), 247 - 255.

An increased occurrence of a splitting failure in textile-reinforced concrete can be noticed in current publications. Various investigations carried out by different research units indicate a high influence of the geometry of the textile reinforcement in terms of the bond behaviour and in particular the splitting failure mode of textile reinforced concrete, with no concluding evaluation being found in literature. This papers aim is to fill this literary gap. Systematic investigations have been carried out by the authors, starting with a geometrical characterization of textile reinforcement, allowing its qualitative description. With this characterization a methodical comparison of different types of textile reinforcement, which was carried out in experimental as well as in numerical investigations by the authors, is made possible. The results of the experimental investigations clearly show a high influence of the cross-section geometry of the fibre strand as well as the regularly repeating variation in cross-sectional dimensions alongside the longitudinal axis of the fibre strand on the splitting forces. In a broad numerical study these two parameters were then varied in a wide range, visualising the resulting splitting forces in dependency of the geometrical characterization of the reinforcement. With this research a further step towards a sound description of the bond behaviour of textile reinforced concrete has been taken.

Textile reinforced concrete; bond behaviour; splitting failure; numerical simulation