Development of lightweight insulating building materials from perlite wastes

G. M. Tsaousi; L. Profitis; I. Douni; E. Chatzitheodorides; D. Panias

doi:10.3989/mc.20198.12517

Autores/as

G. M. Tsaousi National Technical University of Athens https://orcid.org/0000-0002-4985-968X
L. Profitis National Technical University of Athens https://orcid.org/0000-0002-9686-4449
I. Douni National Technical University of Athens https://orcid.org/0000-0001-9602-5429
E. Chatzitheodorides National Technical University of Athens https://orcid.org/0000-0003-1180-5456
D. Panias National Technical University of Athens https://orcid.org/0000-0002-0432-6900

DOI:

https://doi.org/10.3989/mc.20198.12517

Palabras clave:

Geopolimerización, Espumoso, Inorgánico, Ligero

Resumen

Este documento investiga el desarrollo de tableros de espuma de geopolímero, utilizando residuos de perlita como materia prima. Este tipo de materiales ligeros combina la tecnología de geopolimerización con el proceso de formación de espuma. El mecanismo de formación de espuma se basa en la generación de un gas retenido por la matriz del geopolímero en forma de vacíos individuales o interconectados. En este estudio, el agente espumante inorgánico es el peróxido de hidrógeno (H₂O₂), que se agrega a la pasta inicial en diferentes cantidades mediante agitación mecánica. Los materiales porosos producidos tienen densidades efectivas entre 408–476.5 kg/m³, conductividades térmicas entre 0.076–0.095 W/m.K y diferentes tipos de microestructura, dependiendo de la concentración del activador y el contenido del agente espumante. Para evaluar la porosidad y la distribución de tamaños de los vacíos, se aplicaron técnicas de procesamiento de imágenes en las imágenes digitales de las muestras. De acuerdo con estos resultados, los materiales ligeros sintetizados exhiben propiedades térmicas similares o incluso mejores que los materiales porosos de hormigón actuales.

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