Biblioteca de la Universidad Complutense de Madrid

Salt crystallization in porous construction materials II. Mass transport and crystallization processes

Impacto



López-Acevedo Cornejo, Victoria y Viedma Molero, Cristóbal y González García, Victoria y La Iglesia Fernández , Ángel (1997) Salt crystallization in porous construction materials II. Mass transport and crystallization processes. Journal of Crystal Growth , 182 . pp. 103-110. ISSN 0022-0248

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URL Oficial: http://www.journals.elsevier.com/journal-of-crystal-growth/



Resumen

In order to study the processes of salt weathering of monumental stones, several samples were partially immersed in
sodium, potassium and magnesium sulphate solutions which ascended through their capillary network and, eventually,
crystallized. This procedure pretends to simulate the conditions in which foundations and lower walls of building
structures are, within the zone of capillary rise of saline groundwater. Mass transport and the rhythmic nature of
crystallization fronts inside samples reminds the Liesegang phenomenon, so they have been considered as a form of
dissipative structures. The saline deposits developed on the surface of the samples were efflorescences (mirabilite and
epsomite), subefflorescences (picromerite, aphthitalite and arcanite) and crusts (aphthitalite and arcanite). The most
devastating effects resulted from massive crystallization inside the samples or from surface peeling due to the development
of subefflorescences or crusts.


Tipo de documento:Artículo
Palabras clave:Salt weathering; Salt crystallization; Porous media; Dissipative structures
Materias:Ciencias > Geología > Cristalografía
Código ID:16508
Depositado:24 Sep 2012 10:06
Última Modificación:24 Sep 2012 10:06

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