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Title: Expansions with different origins in a concrete dam with bridge over spillway
Authors: Blanco, Ana
Cavalaro, Sergio H.
Segura, Ignacio
Segura-Castillo, Luis
Aguado, Antonio
Keywords: Gravity dam
Alkali-silica reaction
Delayed ettringite formation
Issue Date: 2018
Publisher: © Elsevier
Citation: BLANCO, A. ... et al, 2018. Expansions with different origins in a concrete dam with bridge over spillway. Construction and Building Materials, 163, pp.861-874.
Abstract: 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.
Description: This paper was published in the journal Construction and Building Materials and the definitive published version is available at https://doi.org/10.1016/j.conbuildmat.2017.12.161.
Sponsor: The authors acknowledge the economic support provided by the Spanish Ministry of Science and Innovation – Spain through the project BIA2013-49106-C2-1-R and the collaboration project with Universidad de la Republica (Uruguay).
Version: Accepted for publication
DOI: 10.1016/j.conbuildmat.2017.12.161
URI: https://dspace.lboro.ac.uk/2134/32283
Publisher Link: https://doi.org/10.1016/j.conbuildmat.2017.12.161
ISSN: 0950-0618
Appears in Collections:Published Articles (Architecture, Building and Civil Engineering)

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