Estudio de la velocidad de reacción álcali-sílice de áridos españoles. Propuesta de clasificación basada en el ensayo acelerado de barras de mortero y en parámetros petrográficos
| Autor: | Hairon Recino, R. García-Roves, E. Puerto, Beatriz Aldea, Esperanza Menéndez |
|---|---|
| Přispěvatelé: | CSIC - Instituto de Ciencias de la Construcción Eduardo Torroja (IETCC), Menéndez, Esperanza [0000-0001-6461-4798], García-Roves, Ricardo [0000-0003-0961-3447], Aldea, Beatriz [0000-0001-6961-8050], Puerto, Esther [0000-0001-8474-4477], Recino, Hairon [0000-0002-4831-7790], Menéndez, Esperanza, García-Roves, Ricardo, Aldea, Beatriz, Puerto, Esther, Recino, Hairon |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Spanish aggregates
Materials science Quartz reactivity index Petrography Mineralogy Áridos españoles Petrografía Reaction rate Velocidad de reacción General Materials Science Reactivity (chemistry) Porosity Quartz Materials of engineering and construction. Mechanics of materials Accelerated curing Building and Construction Reacción álcali-sílice Mortar bar test Ensayo acelerado de barras de mortero Mechanics of Materials TA401-492 Alkali–silica reaction Índice de reactividad del cuarzo Alkali-silica reaction Mortar |
| Zdroj: | Materiales de Construccion, Vol 71, Iss 344 (2021) Materiales de Construcción; Vol. 71 No. 344 (2021); e263 Materiales de Construcción; Vol. 71 Núm. 344 (2021); e263 Materiales de Construcción Consejo Superior de Investigaciones Científicas (CSIC) Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1988-3226 0465-2746 |
| DOI: | 10.3989/mc.2021.v71.i344 |
| Popis: | The alkali-silica reaction has been studied in depth due to the evolution in the knowledge of the expansive phenomenon. One of its most important aspects is the reaction rate of the aggregates. In Spain, at the early 90s of the 20th century, aggregates were considered almost non-reactive. However, the use of accelerated curing and other environmental factors revealed that there were potentially reactive siliceous aggregates. Nevertheless, there are several siliceous and limestone aggregates with siliceous inclusions that show reactivity over long period. In the present work, open porosity, expansion and petrography with quartz reactivity index have been determined, in 68 siliceous, limestone and dolomitic aggregates, from quarries located in areas with diagnostic reactivity. Based on these parameters and their interrelation, a classification method is proposed to detect slow-reacting aggregates. This research was funded by the CSIC (Intramural Projects PIE 201660E054 and PIE 202060E176). |
| Databáze: | OpenAIRE |
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