Repeated loading, fatigue and influence of the load duration
Concrete long-term behavior is not limited to deformations caused
by creep and shrinkage. Inelastic deformations are also caused by
high levels of stresses. These deformations, due to microcracking
phenomena in concrete, are related to fatigue under sustained
loading and can also lead to failure of concrete under compression
in the long term.
Effect of sustained loading on concrete strength