2026-06-29T21:01:45Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/86602024-02-13T01:05:20Zcom_10259_3969com_10259_5086com_10259_2604col_10259_3970

González Cabrera, Dorys Carmen Moradillo De las Heras, María del Rosario Mínguez Algarra, Jesús Martínez Martínez, José Antonio Vicente Cabrera, Miguel Ángel Fatigue Fiber-reinforced high-strength concrete High-strength concrete Residual tension strength The effect of fatigue loads on one of the main mechanical properties of fiber-reinforced high strength concrete (FRHSC) is studied in this work. In particular, this paper analyzes the variations in the residual tensile strength of steel fiber-reinforced concretes following cyclic flexural loading, which causes a predefined level of damage. To do so, a total of 40 prismatic specimens were tested. The specimens were not notched, but had previously been subjected to precracking. This has a similar effect to notching, but with a much smaller radius around the edge of the crack, which is therefore more vulnerable to fatigue. The results show that the damage provokes a progressive reduction in the residual traction strength. The study proposes two numerical expressions for the stress–crack width softening curves under tensile loads: an exponential formulation and a potential formulation. In both cases, the coefficients of both formulations depend on the damage that is induced. In addition, the proposal is to use fitted curves of the above-mentioned potential type. 2024-02-09 2024-02-09 2017-08 info:eu-repo/semantics/article 1464-4177 http://hdl.handle.net/10259/8660 10.1002/suco.201600102 1751-7648 eng Structural Concrete. 2017, V. 19, n. 2, p. 340-351 https://doi.org/10.1002/suco.201600102 info:eu-repo/semantics/openAccess Wiley