2026-04-18T02:26:07Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/92902024-06-20T00:05:19Zcom_10259_4809com_10259_5086com_10259_2604col_10259_4810
Repositorio Institucional de la Universidad de Burgos
author
Mena Alonso, Álvaro
author
González Cabrera, Dorys Carmen
author
Mínguez Algarra, Jesús
author
Vicente Cabrera, Miguel Ángel
2024-06-19T11:49:52Z
2024-06-19T11:49:52Z
2024-01-12
0950-0618
http://hdl.handle.net/10259/9290
10.1016/j.conbuildmat.2023.134424
This paper studies the size effect on flexural fatigue in concrete. In particular, the main objective is to evaluate how the addition and content of steel fibers affect this size effect. For this purpose, four types of concrete have been produced: plain and reinforced concrete with fiber contents of 0.3%, 0.6% and 1%. Two prismatic specimen sizes were considered: 75×75×300 mm, named S, and 150×150×600 mm, named L. All specimens were subjected to 3-point bending fatigue at the same relative stress levels up to failure. The results reveal very interesting conclusions. The fibers mitigate the size effect on fatigue life, going from a difference of three orders of magnitude in PC, to practically zero in SFRC. Furthermore, it is observed that fibers do not necessarily improve fatigue life; in fact, the trend changes depending on specimen size. Finally, it is shown that the secondary crack opening rate dCMOD/dn has a good correlation with fatigue life, explaining the dispersion of N in general and the size effect in particular.
eng
Atribución 4.0 Internacional
Size effect
Flexural fatigue
Fiber-reinforced concrete
Cracking in concrete
Secondary crack opening rate
Size effect on the flexural fatigue behavior of high-strength plain and fiber-reinforced concrete
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/9290/1/Mena-cbm_2024.pdf
File
MD5
92066ee08d2e3878201545f27a0c3644
5071570
application/pdf
Mena-cbm_2024.pdf