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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/8001

    Título
    Scaled concrete beams containing maximum levels of coarse recycled aggregate: Structural verifications for precast‐concrete building applications
    Autor
    Fiol Olivan, FranciscoAutoridad UBU Orcid
    Revilla Cuesta, VíctorAutoridad UBU Orcid
    Skaf Revenga, MartaAutoridad UBU Orcid
    Thomas, Carlos
    Manso Villalaín, Juan ManuelAutoridad UBU Orcid
    Publicado en
    Structural Concrete. 2023, V. 24, n. 3, p. 3476-3497
    Editorial
    Wiley
    Fecha de publicación
    2023-04
    ISSN
    1464-4177
    DOI
    10.1002/suco.202200963
    Resumen
    The use of Recycled aggregate (RA) enhances concrete sustainability. If used on an industrial-scale, structural verification, and testing will be required to confirm that RA concrete can meet relevant industrial standards and the requirements of manufacturers, especially in the precast-concrete industry. In this paper, an experimental campaign with the participation of a precast-concrete manufacturer is reported. The objective is to test a self-compacting concrete (SCC) mix, designed for structural applications, that contains maximum amounts of 100% coarse RA, in order to establish its compliance with the habitual requirements of precast-concrete manufacturers. Thus, scaled beams (12 × 24 × 180 and 24 × 24 × 130 cm) were subjected to bending, shear-bending, shear, and long-term-deflection tests. In addition, the performance of that SCC mix in the bending and shear-bending tests was compared with the performance of an SCC mix of similar compressive strength containing 0% coarse RA. In the failure tests, the experimental results were between 1.5 and 3 times higher than the required values. The elastic behavior of both SCC mixes was also very similar in those tests, regardless of the amount of coarse RA, due to the robust design of the water and superplasticizer content of the SCC, which balanced the decreased flowability and the lower compressive strength of SCC that resulted from the additions of coarse RA. The SCC mix with 100% RA showed a lower load-bearing capacity after failure and narrow compliance margins with the deflection limits of the long-term-deflection test. Even though the SCC mix with 100% RA met all the standard technical specifications of the precast-concrete manufacturer, reference should always be made to the serviceability limit states that are applicable at the time of the structural design phase
    Palabras clave
    Bending test
    Long-term deflection test
    Precast-concrete-application trials
    Recycled aggregate
    Self-compacting concrete
    Shear test
    Shear-bending test
    Materia
    Ingeniería civil
    Civil engineering
    Materiales de construcción
    Building materials
    URI
    http://hdl.handle.net/10259/8001
    Versión del editor
    https://doi.org/10.1002/suco.202200963
    Aparece en las colecciones
    • Artículos SUCONS
    Attribution-NonCommercial-NoDerivatives 4.0 Internacional
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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    Nombre:
    Fiol-sc_2023.pdf
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    12.28Mb
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