Comparación de Características de Resistencia y Durabilidad de un Geopolímero obtenido a partir de ceniza Volante, Fibra de Vidrio Esmerilado y Polvo de Vidrio
DOI:
https://doi.org/10.3989/mc.2017.05416Palabras clave:
Geopolímeros, Reacción alkali-sílice, Fibra de vidrio esmerilado, Ceniza volante, Polvo de vidrioResumen
Se estudiaron las características de resistencia y durabilidad de geopolímeros producidos utilizando tres precursores, formados por cenizas volantes, Fibra de Vidrio Esmerilado (FVE) y vidrio en polvo. Se utilizaron combinaciones de soluciones de hidróxido de sodio y silicato de sodio como activadores, y se investigó el efecto del diferente contenido de sodio y sílice de los activadores en la trabajabilidad y resistencia a la compresión de los geopolímeros. Los parámetros utilizados en este estudio fueron la relación de masa de Na2O-a-aglutinante (para el contenido de sodio), y SiO2-a-Na2 O del activador (para el contenido de sílice). Las mezclas de geopolímeros obtenidas a partir de cada precursor que alcanzaron la más alta resistencia a la compresión fueron evaluadas por su resistencia a la reacción álcali-sílice y comparadas con el rendimiento de las mezclas de cemento portland. Los resultados de las pruebas revelaron que la FVE y los geopolímeros a base de ceniza volante se comportaron mejor que las mezclas de geopolímeros a base de vidrio en polvo. La resistencia de los geopolímeros a base de ceniza volante y FVE a la reacción álcali-sílice fue superior que la de las mezclas de cemento portland, mientras que los geopolímeros a base de vidrio en polvo mostraron un rendimiento inferior.
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