Comparison of the results of different test methods to evaluate the potential reactivity of sands from the south of the province of Buenos Aires against the alkali-silica reaction
DOI:
https://doi.org/10.59069/24225703e013Keywords:
aggregates, alkali-silica reaction, standardized testsAbstract
Sands from five quarries located in the south of the province of Buenos Aires and one from the north of the province of Río Negro, qualified as potentially reactive against the alkali-silica reaction (ASR) in previous studies according to the accelerated mortar bar test (IRAM 1674), were studied. A detailed petrographic study was performed (IRAM 1649), quantifying the potentially reactive components, as well as complementary physical tests according to the conventional (at 38 °C) and accelerated (at 60 °C) concrete prism test, and the results were compared with those previously obtained. It was concluded that all sands contain volcanic glass, in the form of fresh volcanic shards and in the mesostasis of some volcanic rocks, as deleterious species against the ASR, despite they have different provenances. Although all analyzed quarries were qualified as potentially reactive according to the petrographic test and the accelerated mortar bar test, in the concrete prism (both accelerated and conventional), they present variable behavior. Only the sand from quarry 5 shows results above the limits established by all the standardized tests used to evaluate the potential reactivity against the ASR, therefore, it is qualified as potentially reactive. Their reactivity has been confirmed due to the ASR development in structures in service.
References
Batic, O.R., Wainsztein, M. y Iñiguez A. (1974). Estudios y experiencias sobre agregados para hormigones empleados en la zona de Bahía Blanca en relación a la reactividad alcalina potencial. Anales LEMIT, Vol. 1: 1-10.
Berezosky, J., Lescano, L., Locati, F., Maiza, P. y Marfil, S. (2015). Behaviour of reactive sands in concrete. A case of study. International Conference on Sustainable Structural Concrete: 349-358. La Plata. Argentina.
Berezosky, J., Falcone, D., Locati, F., Madsen, L. y Marfil S. (2016). Evaluación de la potencial reactividad de arenas utilizadas como agregado fino en la zona de Bahía Blanca, provincia de Buenos Aires. 21° Reunión Técnica y VII Congreso Internacional de la Asociación Argentina de Tecnología del Hormigón: 357-364. Salta. Argentina.
Berezosky, J., Marfil, S. y Lescano, L. (2017). Análisis petrográfico de las arenas del sur de la provincia de Buenos Aires. Factibilidad de uso como agregado en hormigón. 3er Congreso Argentino de Áridos: 75-79. Córdoba. Argentina.
Berezosky, J., Marfil, S. y Di Sciullo N. (2018). Evaluación del deterioro de pavimentos de hormigón de rutas interurbanas de Bahía Blanca (provincia de Buenos Aires). VIII Congreso Internacional, 22ª Reunión Técnica de la Asociación Argentina de Tecnología del Hormigón: 449-456. Olavarría. Argentina.
Falcone, D. (2013). Antecedentes y metodología de ensayo para evaluar la reacción álcali-sílice. Tesis de Magister. Universidad Nacional del Centro de la Provincia de Buenos Aires. Inédita: 114 pp.
IRAM, 1512 (2013) Agregado fino para hormigón de cemento, Instituto Argentino de Normalización: 25 pp.
IRAM, 1637 (1966). Reacción álcali-agregado. Método de la barra de mortero para la determinación de la reactividad alcalina potencial. Instituto Argentino de Normalización: 10 pp.
IRAM, 1649 (2008). Examen petrográfico de agregados para hormigón. Instituto Argentino de Normalización, segunda edición: 18 pp.
IRAM, 1650 (1968). Agregados. Reactividad alcalina en áridos. Método de ensayo químico. Instituto Argentino de Normalización: 15 pp.
IRAM, 1674 (1997) Determinación de la reactividad alcalina potencial. Método acelerado de la barra de mortero. Instituto Argentino de Normalización: 14 pp.
IRAM, 1700 (2013) Agregados. Determinación del cambio de longitud en prismas de hormigón, debido a la reacción álcali-agregado. Instituto Argentino de Normalización: 16 pp.
Maiza, P., Marfil, S., Sota, J. y Batic, O. (1988). Comparación de los resultados obtenidos en los ensayos de reactividad potencial alcalina en áridos finos utilizados en Bahía Blanca y Punta Alta, Prov. de Buenos Aires. II Jornadas Geológicas Bonaerenses: 697 709. Bahía Blanca. Argentina.
Marfil, S. 1989. La reacción álcali agregado. Investigación de la reactividad potencial de los agre-gados con los álcalis del cemento, utilizados en Bahía Blanca y su zona de in¬fluencia. Tesis Doctoral. Universidad Nacional del Sur. Inédito 315 pp. Bahía Blanca.
Señas, L., Maiza, P., Priano, C. y Marfil S. (2010). Patologías desarrolladas en una estructura de hormigón en zona marítima. VI Congreso Internacional sobre Patología y Recuperación de Estructuras. CINPAR: 14 pp. Córdoba. Argentina.
Sims, I. y Poole, A.B. (2017). Alkali-aggregate reaction in concrete: A World Review. London. UK. CRC Press. Taylor & Francis Group: 767 pp.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Juan José Berezosky, Darío Falcone, Francisco Locati, Silvina Marfil
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
All papers published in this Journal are protected by copyrights. No part of published material covered herein may be reproduced, transmitted, stored, or used in any form o by any means graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, without a previously accepted permission by the Editor.
The author(s) will be allowed to include a paper version in his own or institutional Web site.
The author(s) may reproduce the paper, totally or partially, and diffuse it contain o let it available to the public in impressed or electronic format only as a part of a teaching context or as a state-of-the art reviewing, for its use in a academic context or for researches in their institution, by citing its previous publication in this Journal.
