Concrete structures are increasingly affected by fatigue damage, while new slender building structures with greater mechanical requirements make it necessary to deepen knowledge of their behaviour under fatigue loading. In this research, high-strength plain concrete was studied under two different frequencies of cyclic compressive stress. Wöhler curves were obtained in two different ways, on the one hand, applying a uniform frequency of 10 Hz and, on the other hand, applying the specimen resonance frequency. The results show two different types of behaviour. A reduction in fatigue life was observed in those concretes tested at very high frequency. When loads were applied at resonance frequency, they did not seem to modify the breaking mechanisms of the concrete subjected to fatigue.

混凝土结构越来越受到疲劳损伤的影响，而对机械要求更高的新型细长建筑结构则有必要加深对其在疲劳载荷下的性能的了解。在这项研究中，研究了两种不同频率的循环压缩应力下的高强度普通混凝土。Wöhler曲线以两种不同的方式获得，一方面施加10 Hz的均匀频率，另一方面施加样品共振频率。结果显示了两种不同类型的行为。在非常高的频率下测试的混凝土中，观察到疲劳寿命降低。当以共振频率施加载荷时，它们似乎并没有改变遭受疲劳的混凝土的断裂机理。