Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Rheological and thermal properties of aerated sprayed mortar
Año:2017
Áreas de investigación
  • Construccion,
  • Medios de la construccion,
  • Ingeniería de construcción
Datos
Descripción
This paper studies the rheological properties in aerated cement pastes in order to develop an aerated sprayed mortar with low thermal conductivity. For this purpose, different mixtures of cement with additions of metakaolin (MK) and sepiolite (SP) were tested. In addition, influence of yield stress on build-up thickness, as well as expansion speed and pore network were studied using cement pastes aerated with aluminum powder. At the same time, the volume increase during expansion, water retention and yield stress of the fresh foamed cement pastes were studied to characterize the fresh mortar. Results obtained show that the incorporation of siliceous fly ashes (SFA) in ordinary Portland cement together with additions of MK or/and SP provided the largest expansion speed increase and the lowest density of the aerated mortar. Pastes with greater yield stress show higher thermal conductivity but are better to be pneumatically gunited due to its bigger build up thickness. The most suitable paste from all them was selected, sprayed and aerated over ceramic bricks, checking the results on site. Results obtained by means of these tests confirm that is possible to spray an aerated mortar over vertical surfaces. In addition, this mortar has acceptable thermal insulation properties to be used in chambers of building façades and for external wall thermal insulation systems (EWIS).
Internacional
Si
JCR del ISI
Si
Título de la revista
Construction And Building Materials
ISSN
0950-0618
Factor de impacto JCR
3,169
Información de impacto
Datos JCR del año 2017
Volumen
154
DOI
10.1016/j.conbuildmat.2017.07.185
Número de revista
Desde la página
275
Hasta la página
283
Mes
JULIO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Javier Pinilla Melo (UPM)
  • Autor: Nelson Flores Medina (Universidad Europea de las Islas Canarias)
  • Autor: Alberto Sepulcre Aguilar (UPM)
  • Autor: Francisco Hernandez Olivares (UPM)
  • Autor: Gustavo Arcones Pascual (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Construcción y Tecnología Arquitectónicas
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