Memorias de investigación
Artículos en revistas:
Anhydrite / aerogel composites for thermal insulation
Año:2015
Áreas de investigación
  • Ingeniería civil y arquitectura
Datos
Descripción
High performance thermal insulating composite materials can be produced with mineral binders and hydrophobic aerogel particles through a hydrophilization process for the latter with surfactants. The present study is focused on the development of aerogel/calcium sulfate composites by the hydrophilization of hydrophobic silica aerogel particles through a polymer-based surfactant. Its effects on the microstructure and hydration degree are examined as well as their relation to the resulting mechanical and physical properties. Results show that composites with an around 60 % of aerogel by volume can achieve a thermal conductivity <30 mW/m × K. Interestingly, a surfactant addition of 0.1 % by wt% of the water in the mixtures provides better material properties compared to a surfactant wt% addition of 5 %. However, it has been found around 40 % entrained air, affecting the material properties by reducing the binder and aerogel volume fractions within the composites. Moreover, gypsum crystallization starts to be inhibited at aerogel volume fractions >35 %. Towards material optimization, a model for the calculation of thermal conductivity of composites and an equation for the compressive strength are proposed.
Internacional
Si
JCR del ISI
Si
Título de la revista
Materials And Structures
ISSN
1359-5997
Factor de impacto JCR
1,714
Información de impacto
Datos JCR del año 2014
Volumen
DOI
0.1617/s11527-015-0746-8
Número de revista
Desde la página
1
Hasta la página
15
Mes
SIN MES
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Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Análisis e Intervención en Patrimonio Arquitectónico
  • Grupo de Investigación: Técnicas Innovadoras y Sostenibles en la Edificación
  • Departamento: Construcción y Tecnología Arquitectónicas