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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/6187

    Título
    Models for compressive strength estimation through non-destructive testing of highly self-compacting concrete containing recycled concrete aggregate and slag-based binder
    Autor
    Revilla Cuesta, VíctorAutoridad UBU Orcid
    Skaf Revenga, MartaAutoridad UBU Orcid
    Serrano López, RobertoAutoridad UBU Orcid
    Ortega López, VanesaAutoridad UBU Orcid
    Publicado en
    Construction and Building Materials. 2021, V. 280, 122454
    Editorial
    Elsevier
    Fecha de publicación
    2021-04
    ISSN
    0950-0618
    DOI
    10.1016/j.conbuildmat.2021.122454
    Resumen
    Indirect estimation of compressive strength through non-destructive testing is key to monitoring the strength of structural concretes used in construction and rehabilitation works. However, no models are available to perform this estimation in highly Self-Compacting Concrete (SCC) with Recycled Concrete Aggregate (RCA). To fill this gap, two indirect measures were tested in this paper, the hammer rebound index and Ultrasonic Pulse Velocity (UPV), to predict the compressive strength of highly SCC. To do so, 24 SCC mixes were developed with different aggregate powders, binders, such as Ground Granulated Blast Furnace Slag (GGBFS), and contents of fine RCA. Compressive strength, and both indirect measures of all mixtures were determined at 1, 7, 28, and 90 days. The development of specific models for highly SCC responded to the inappropriateness of conventional models that are not adapted to its high fines content. Modelling as a function of either UPV or the hammer rebound index yielded accurate predictions, although the UPV model proved more sensitive to compositional changes and presented higher uncertainty. The best predictions were modelled by combining both indirect measures. The models provided safe and accurate indirect estimations of the compressive strength of high flowability SCC in real structures.
    Palabras clave
    Recycled concrete aggregate
    Self-compacting concrete
    Non-destructive testing
    Hammer rebound index
    Ultrasonic pulse velocity
    Ground Granulated Blast Furnace Slag
    Structural health monitoring
    Compressive strength
    Materia
    Ingeniería civil
    Civil engineering
    Materiales de construcción
    Building materials
    Ensayos (Tecnología)
    Testing
    URI
    http://hdl.handle.net/10259/6187
    Versión del editor
    https://doi.org/10.1016/j.conbuildmat.2021.122454
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    • 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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    Revilla-Cbm2_2021.pdf
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