2026-04-29T17:51:29Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/99642025-01-21T01:05:27Zcom_10259_4809com_10259_5086com_10259_2604col_10259_4810

Mena Alonso, Álvaro 721 600 0000-0002-4269-5299 Vicente Cabrera, Miguel Ángel 574 600 0000-0002-9425-6087 Mínguez Algarra, Jesús 369 600 0000-0003-0569-5131 González Cabrera, Dorys Carmen 246 600 0000-0001-8740-120X 2025-01-20T09:37:06Z 2025-01-20T09:37:06Z 2024-10 0141-0296 http://hdl.handle.net/10259/9964 10.1016/j.engstruct.2024.119115 This paper studies the impact of specimen size and fiber content on the flexural fatigue response of high-performance fiber-reinforced concrete (HPFRC). For this purpose, six series of prismatic specimens were fabricated, considering two sizes (75 × 75 × 300 mm and 150 × 150 × 600 mm) and three fiber contents (0.3%, 0.6% and 1%). Twelve specimens from each series were tested in flexural fatigue under the same relative stress levels. It was sought to explain the variations in fatigue response through the observation of the mesostructure. In particular, correlations were established between the fiber distribution and the fatigue strength of all series. The results reveal that the parameter that most influences the ultimate static bending strength (σult) is the fiber volume in the central region of the specimens (Vfib), with the orientation having a much lower weight. In contrast, the opposite is true for cyclic tests. Since the fatigue stress levels were calculated in relation to σult of each series, the influence of Vfib is negligible. In this case, a clear correlation between fiber orientation with the longitudinal axis and fatigue strength is observed. Specifically, the orientation factor ηX accurately predicts both the characteristic fatigue life and the rate at which damage progresses in the main macrocrack. The authors are grateful for the financial support of the Spanish Ministerio de Economía y Competitividad (grant no. PID2019–110928RB-C32) and the Spanish Ministerio de Ciencia, Innovacion ´ y Universidades (grant no. FPU19/02685). application/pdf eng Elsevier Engineering Structures. 2024, V. 322, n. A, p. 119115 https://doi.org/10.1016/j.engstruct.2024.119115 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Flexural fatigue Micro-computed tomography Fiber distribution Orientation factor Cyclic creep curve Materiales de construcción Ingeniería civil Building materials Civil engineering Influence of specimen size and fiber content on fatigue flexural strength of high-performance fiber-reinforced concrete info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Engineering Structures 322 A 119115 THUMBNAIL Mena-es_2024.pdf.jpg Mena-es_2024.pdf.jpg IM Thumbnail image/jpeg 4971 https://riubu.ubu.es/bitstream/10259/9964/4/Mena-es_2024.pdf.jpg 66f5214f8ffab7d3059b11e29d25cb54 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/9964/3/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 3 CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/9964/2/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 2 ORIGINAL Mena-es_2024.pdf Mena-es_2024.pdf application/pdf 9728816 https://riubu.ubu.es/bitstream/10259/9964/1/Mena-es_2024.pdf 9225516a94149906ae9fd844e84b6713 MD5 1 10259/9964 oai:riubu.ubu.es:10259/9964 2025-01-21 02:05:27.05 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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