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    Expansions with different origins in a concrete dam with bridge over spillway

    Concrete dams with expansions from different origins are rare and scarcely documented in the literature, therefore their study gains special interest. This study presents the case of a 62-year-old concrete dam with signs of deterioration due to expansive reactions. Several tests performed on the samples extracted from the dam such as X-ray diffraction, scanning electron microscope with energy dispersive spectroscopy mode and petrography suggest that the expansions are due to a delayed ettringite formation and a subsequent alkali-silica reaction. Thermal and mechanical models developed in the study support this diagnosis. ; Peer Reviewed ; Postprint (author's final draft)

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    Expansions with different origins in a concrete dam with bridge over spillway

    Concrete dams with expansions from different origins are rare and scarcely documented in the literature, therefore their study gains special interest. This study presents the case of a 62-year-old concrete dam with signs of deterioration due to expansive reactions. Several tests performed on the samples extracted from the dam such as X-ray diffraction, scanning electron microscope with energy dispersive spectroscopy mode and petrography suggest that the expansions are due to a delayed ettringite formation and a subsequent alkali-silica reaction. Thermal and mechanical models developed in the study support this diagnosis. ; Peer Reviewed ; Postprint (author's final draft)

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    Expansions with different origins in a concrete dam with bridge over spillway

    Concrete dams with expansions from different origins are rare and scarcely documented in the literature, therefore their study gains special interest. This study presents the case of a 62-year-old concrete dam with signs of deterioration due to expansive reactions. Several tests performed on the samples extracted from the dam such as X-ray diffraction, scanning electron microscope with energy dispersive spectroscopy mode and petrography suggest that the expansions are due to a delayed ettringite formation and a subsequent alkali-silica reaction. Thermal and mechanical models developed in the study support this diagnosis. ; Peer Reviewed ; Postprint (author's final draft)

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    Titel:

    Expansions with different origins in a concrete dam with bridge over spillway

    Beteiligte:

    Blanco Álvarez, Ana (Autor:in) / Pialarissi Cavalaro, Sergio Henrique (Autor:in) / Segura Pérez, Ignacio (Autor:in) / Segura Castillo, Luis (Autor:in) / Aguado de Cea, Antonio (Autor:in) / Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental / Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció

    Erscheinungsdatum:

    01.02.2018

    DOI:

    https://doi.org/10.1016/j.conbuildmat.2017.12.161

    Medientyp:

    Aufsatz (Zeitschrift)

    Format:

    Elektronische Ressource

    Sprache:

    Englisch

    Schlagwörter:

    Gravity dam , Preses de formigó -- Manteniment i reparació , Concrete dams--Maintenance and repair , Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica , Expansions , Delayed ettringite formation , Modelling , Alkali-silica reaction , marítima i sanitària::Embassaments i preses

    Klassifikation:

    DDC:  690

    Lizenzbestimmungen:

    http://creativecommons.org/licenses/by-nc-nd/3.0/es/

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