Untersuchung des Wärmeübergangs von zyklisch beanspruchten Betonzylindern.

Investigation of the heat transfer of cyclic loaded concrete cylinders Periodic load cycles, such as those that occur on bridges or wind turbines, are of great importance for dynamic long‐term considerations of concrete. Within the life span of such structures, up to 109 load changes can be expected. To determine the fatigue strength, the resistance to periodic loads can be determined in a short time in laboratory tests by increasing the load frequency. As a result of this increased load frequency, however, the concrete test specimens heat up, which can lead to an earlier, unrealistic time of failure, which is why the heating must be limited. Therefore, tests and simulations were carried out to investigate the heat release in the sample. In this article, the analytical analysis and measurements of the heat release of heated concrete cylinders are presented. As a conclusion, a possibility of reducing the temperature of dynamically stressed concrete cylinders is introduced. [ABSTRACT FROM AUTHOR]