VALORIZACIÓN DE CENIZAS DEL OLIVAR EN LA FABRICACIÓN Y CARACTERIZACIÓN DE GEOPOLÍMEROS
Fecha
2019-06-21
Autores
Título de la revista
ISSN de la revista
Título del volumen
Editor
Jaén: Universidad de Jaén
Resumen
En este Trabajo de Fin de Grado, se ha estudiado el efecto de la sustitución de metacaolín (MK) por diferentes arcillas naturales de Bailén calcinadas, así como por el residuo cenizas de fondo de poda de olivo y pino (CFA) en la síntesis de nuevos materiales de construcción, geopolímeros. Como activador alcalino se ha utilizado una solución de hidróxido de sodio (NaOH) en una concentración 8 M y silicato de sodio (Na2SiO3). Los resultados indican que la sustitución de MK por distintos tipos de arcillas y por CFA de lugar a geopolímeros con mayor densidad aparente, mayor resistencia mecánica y con conductividad térmica similar o ligeramente superior a los geopolímeros control conteniendo sólo MK. Por tanto, las cenizas de fondo de biomasa como los distintos tipos de arcillas naturales de Bailén calcinadas son materias primas adecuadas para reemplazar al metacaolín en la fabricación de geopolímeros que presentan unas adecuadas propiedades físicas, mecánicas y térmicas.
In this Final Degree Project, the effect of the substitution of metakaolin (MK) by different calcined Bailén natural clays, as well as by the residue of olive and pine pruning bottom ash (CFA) in the synthesis of new construction materials, geopolymers, has been studied. Sodium hydroxide (NaOH) solution at 8 M concentration and sodium silicate (Na2SiO3) were used as alkaline activator. The results indicate that the substitution of MK by different types of clays and by CFA results in geopolymers with higher bulk density, higher mechanical strength and similar or slightly higher thermal conductivity than the control geopolymers containing only MK. Therefore, biomass bottom ashes such as the different types of calcined Bailén natural clays are suitable raw materials to replace metakaolin in the manufacture of geopolymers with suitable physical, mechanical and thermal properties.
In this Final Degree Project, the effect of the substitution of metakaolin (MK) by different calcined Bailén natural clays, as well as by the residue of olive and pine pruning bottom ash (CFA) in the synthesis of new construction materials, geopolymers, has been studied. Sodium hydroxide (NaOH) solution at 8 M concentration and sodium silicate (Na2SiO3) were used as alkaline activator. The results indicate that the substitution of MK by different types of clays and by CFA results in geopolymers with higher bulk density, higher mechanical strength and similar or slightly higher thermal conductivity than the control geopolymers containing only MK. Therefore, biomass bottom ashes such as the different types of calcined Bailén natural clays are suitable raw materials to replace metakaolin in the manufacture of geopolymers with suitable physical, mechanical and thermal properties.
Descripción
Palabras clave
Mecánica