Abstract
FRC in Uruguay is usually used in pavements and slabs-on-ground; design based on empirical experience of suppliers and post-cracking strength is not controlled. This paper presents the results of five research projects developed in Uruguay to address FRC use and to show its potential. A) Montevideo test (MVD), a stable test, which requires simple equipment and uses small samples was developed. Correlation between MVD and EN14651 show a qualitative and quantitative equivalence between them. B) The extent to which the cracking improvement given by fibres collaborates with concrete durability, was experimentally studied in beams exposed to a chloride environment. C) A direct experimental assessment of the SFRC orientation factor was performed for an elevated slab. D) A cross-section of Eladio Dieste’s famous vaults system is composed by a layer of masonry with steel in between them and a layer of mortar with steel mesh reinforcement. Through an experimental research, an equivalent response was obtained by sprayed FRC as a replacement of the mortar-mesh layer. E) Precast concrete sandwich panels, composed of two concrete layers separated by a layer of insulation, were experimental and numerically studied. Traditional reinforcement in the concrete layers was replaced by fibres, optimising the panel geometry and reinforcement.
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Acknowledgements
The authors would like to thank all the companies (Maccaferri, TEYMA, Dieste & Montañez, Cielo Azul, Sika, Bromberg-Controls, Ferrocement, Astori, Laboratorio de Vialidad, MTOP, Guardia Republicana, Atenko), students (Virginia García, Melissa Eguren, Patricio Cañette, Guzman Rippe, Viviana Sfeir, Diego Gonzalez, Santiago Infante, Mauricio Porcelli, Agustín Silveira, Juan Graña, Emiliano Espinosa), and Department professors (Agustín Spalvier, Cinthia Planchón, Alina Aulet) who were involved in the different projects. Funding was also made available from the Agencia Nacional de Investigación e Innovación (ANII), Uruguay, through different Research Projects, and the Comisión Sectorial de Investigación Científica (CSIC) of the University. We gratefully acknowledge: Aparicio Daglio and Gonzalo Larrambebere for their support in Dieste’s vaults project and specially to Mauricio Montaña for his early support, which boosted the development of the research group.
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Segura-Castillo, L. et al. (2022). Recent FRC Developments in Uruguay: Quality Control, Durability and Three Structural Applications. In: Serna, P., Llano-Torre, A., Martí-Vargas, J.R., Navarro-Gregori, J. (eds) Fibre Reinforced Concrete: Improvements and Innovations II. BEFIB 2021. RILEM Bookseries, vol 36. Springer, Cham. https://doi.org/10.1007/978-3-030-83719-8_63
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DOI: https://doi.org/10.1007/978-3-030-83719-8_63
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