Abstract
The main source of crushed stone for concrete in Montevideo, Uruguay, is the granodiorite quarry. The aim was to evaluate the potential reactivity of this crushed stone and determine the expansion of concrete produced with recycled concrete aggregate (RCA), including the granodiorite. The concrete prisms from the accelerated expansion test were crushed once the evaluation in granodiorite was completed. Then the crushed concrete was used as coarse aggregate (at 25% and 75% replacement of non-reactive coarse aggregate) to evaluate the expansion in prisms kept at 60 ℃ and 95% RH for 13 weeks (accelerated methodology) and in prisms kept at 38 ℃ and 95% RH for 40 weeks (traditional methodology). Petrographic analysis of the granodiorite rock showed the presence of microcrystalline quartz as a reactive constituent. In accordance with the expansion in the concrete prism test using the traditional methodology, four samples exhibited reactivity while one did not. However, according to the accelerated methodology with an expansion limit of 0.08%, only two samples displayed reactivity. The concrete containing RCA exhibited greater expansion compared to the reference concrete (which employed non-reactive aggregate) but remained within acceptable limits. The results indicate that the use of RCA derived from concrete containing the studied granodiorite crushed stone resulted in a similar expansion compared to the original concrete. This suggests that the potential reactivity of the granodiorite coarse aggregate persists, even after it has previously undergone a reactive process within concrete.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Zega, C., Sosa, M.E.: Hormigones con Agregados Reciclados, Buenos Aires, Argentina (2017)
Parlamento del Uruguay. Ley 19829 Gestión integral de residuos (2019)
Ministerio de Ambiente. Uruguay + Circular: Plan Nacional de Gestión de Residuos 2022 – 2032, Montevideo, Uruguay (2021)
Roda, C., Pigola, P.: De residuos a recursos: residuos de construcción y demolición en Montevideo (2021)
Swamy, R.N.: The Alkali-Silica Reaction in Concrete. 1st edn., London (1991). 288 p.
Sims, I., Poole, A.: Alkali-Aggregate Reaction in Concrete: A World review (2017)
Barreto Santos, M., de Brito, J., Santos Silva, A., Hasan Ahmed, H.: Study of ASR in concrete with recycled aggregates: influence of aggregate reactivity potential and cement type. Constr. Build. Mater. 265, 120743 (2020)
Barreto Santos, M., de Brito, J., Santos Silva, A., Hawreen, A.: Effect of the source concrete with ASR degradation on the mechanical and physical properties of coarse recycled aggregate. Cem. Concr. Compos. 111, 103621 (2020)
Instituto Argentino de Normalización y Certificación. IRAM 1531. Agregado grueso para hormigón de cemento, Buenos Aires, Argentina (2022). 40 p.
Gobierno de España: Código Estructural Español (2021). https://www.boe.es
Veroslavsky Barbe, G., Ubilla Gutiérrez, M., Martínez Chiappara, S.A.: Cuencas sedimentarias de Uruguay: geología, paleontología y recursos naturales: Cenozoico, Montevideo, Uruguay, Colibrí, UdelaR (2004)
Veroslavsky Barbe, G., Ubilla Gutiérrez, M., Martínez Chiappara, S.A.: Cuencas sedimentarias de Uruguay: geología, paleontología y recursos naturales: Mesozoico, Montevideo, Uruguay, Colibrí, UdelaR (2004)
Instituto Uruguayo de Normas Técnicas: UNIT 1050. Proyecto y ejecución de estructuras de hormigón en masa o armado, Montevideo, Uruguay (2005). 288 p.
Instituto Uruguayo de Normas Técnicas. UNIT 20 Cementos Pórtland para uso general - Definiciones y requisitos, Montevideo, Uruguay (2022). 12 p.
ASTM International: ASTM C494 / C494M Standard Specification for Chemical Admixtures for Concrete (2019)
Instituto Argentino de Normalización y Certificación. IRAM 1700. Métodos para la determinación del cambio de largo en prismas de hormigón, debido a la reacción álcali-agregado, Buenos Aires, Argentina (2013)
Instituto Argentino de Normalización y Certificación. IRAM 1649. Agregados para hormigones. Examen petrográfico, Buenos Aires, Argentina (2008). 18 p.
Beauchemin, S., Fournier, B., Duchesne, J.: Evaluation of the concrete prisms test method for assessing the potential alkali-aggregate reactivity of recycled concrete aggregates. Cem. Concr. Res. 104, 25–36 (2018)
Acknowledgments
Thanks to the CSIC (Science Investigation Committee - UdelaR) and Canteras Montevideo S.A. for the financial support (CSIC-VUSP-M1 project) and materials supply for the study.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Vila, P., Peralta, R., Bonjour, H., Pereyra, M.N. (2024). Potential Alkali-Reactivity of a Granodiorite. Expansion in Concrete Produced with Recycled Concrete Aggregate. In: Sanchez, L.F., Trottier, C. (eds) Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete. ICAAR 2024. RILEM Bookseries, vol 50. Springer, Cham. https://doi.org/10.1007/978-3-031-59349-9_81
Download citation
DOI: https://doi.org/10.1007/978-3-031-59349-9_81
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-59348-2
Online ISBN: 978-3-031-59349-9
eBook Packages: EngineeringEngineering (R0)