1. 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
- Author
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Hairon Recino, R. García-Roves, E. Puerto, Beatriz Aldea, Esperanza Menéndez, 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, and Recino, Hairon
- Subjects
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 - Abstract
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).
- Published
- 2021
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