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

2024-02-09T11:32:37Z urn:hdl:10259/8660 Postcracking residual strengths of fiber‐reinforced high‐performance concrete after cyclic loading 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. 2024-02-09T11:32:37Z 2024-02-09T11:32:37Z 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