Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Anhydrite / aerogel composites for thermal insulation
Year:2015
Research Areas
  • Civil engineering and architecture
Information
Abstract
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.
International
Si
JCR
Si
Title
Materials And Structures
ISBN
1359-5997
Impact factor JCR
1,714
Impact info
Datos JCR del año 2014
Volume
0.1617/s11527-015-0746-8
Journal number
From page
1
To page
15
Month
SIN MES
Ranking
Participants
  • Autor: Daniel Sanz Pont (UPM)
  • Autor: Fco David Sanz Arauz (UPM)
  • Autor: Cesar Bedoya Frutos (UPM)
  • Autor: Robert J. Flatt (ETH Zúrich)
  • Autor: Sol López Andrés (UCM)
Research Group, Departaments and Institutes related
  • 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
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)