[ES] In certain energy storage applications, such as steam storage tanks in solar power plants, very high strength concrete is a material of great interest due to its high mechanical properties, in particular tensile strength. In these applications, the material is subjected to repeated thermal and mechanical loads and its fatigue behaviour should therefore be properly analysed. In this work, an experimental study of the behaviour against fatigue failure to flexotraction of a very high strength concrete at moderately high temperatures is carried out. To this end, cycling bending tests have been carried out at three points of a very high strength concrete, with and without reinforcing steel fibres, at ambient temperature 100 °C and 200 °C. On the basis of the experimental results and the application of a probabilistic model, the Wöhler curves were obtained from the concrete tested, demonstrating and quantifying the effect of the addition of steel fibres and the damage to the cementic matrix caused by the increase in temperature, leading to a reduction of life to fatigue. The authors would like to thank the Spanish Ministry of Economy and Competitiveness for the contribution of the funding of the work carried out through project BIA2016-75431-R. Rios Jimenez, J.; Cifuente Bulte, H.; Medina Encina, F. (2018). Determination of fatigue Wöhler curves to flexotraction of a high-temperature high strength concrete. In HAC 2018. V Ibero-American Congress of autocompactable concrete and special concrete. Publishing house Universitat Politècía de València. 629-638. https://doi.org/10.4995/HAC2018.2018.5527