Memorias de investigación
Artículos en revistas:
Reduction of the calcium leaching rate of cement paste by addition of silica nanoparticles
Año:2008
Áreas de investigación
  • Materiales de construccion
Datos
Descripción
Calcium leaching is a degradation process that consists in the progressive dissolution of the cement paste as a consequence of the migration of the calcium ions to the aggressive solution. Although it is a well known phenomenon, a way of reducing it has not been found yet. The aim of this work is to prove how the addition of small amounts of silica nanoparticles to the cement paste can induce such reduction. The experimental results obtained have shown that nanosilica increases the strength of the cement paste about a 30% in cured samples and more than a 100% in the asymptotically leached ones. At the level of the structure of the C–S–H gel, silica nanoparticles increase the average length of the silicate chains and reduce their polymerization as calcium dissolves. An important decrease of the degradation in terms of porosity and amount of calcium lost has also been observed.
Internacional
Si
JCR del ISI
No
Título de la revista
CEMENT AND CONCRETE RESEARCH
ISSN
0008-8846
Factor de impacto JCR
0
Información de impacto
Volumen
38
DOI
Número de revista
0
Desde la página
1112
Hasta la página
1118
Mes
ENERO
Ranking
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Participantes
  • Autor: J.J. GAITERO
  • Autor: Ana Guerrero Bustos UPM
  • Autor: I. CAMPILLO
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Tecnología de la Construcción y Ciencia de los Materiales para la edificación y la obra Civil
  • Departamento: Ingeniería Civil: Construcción