Evaluación del tratamiento de consolidación de dolomías mediante nanopartículas de hidróxido de calcio en condiciones de alta humedad relativa

L. S. Gomez-Villalba, P. López-Arce, A. Zornoza, Monica Isabel Rueda Alvarez, R. Fort

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

11 Citas (Scopus)

Resumen

In this article, the results of a treatment applied to dolomitic stones using an isopropyl colloidal solution based on calcium hydroxide nanoparticles with a concentration of 2.0g/l are presented. The consolidation process in the stone has been checked before and after 28 days of exposure to 75% relative humidity. Morphologic and structural studies of the consolidating product confirmed the carbonation process. X ray diffraction, electron microscopy (TEM and ESEM), and electron diffraction carried out on the consolidating product have confirmed the transformation of portlandite phase to calcium carbonate polymorphs, calcite, aragonite and vaterite. Petrophysical tests performed on the stone before and after the application of the product have shown the improvement in the physical and hydrical properties due to the increase in the ultrasound velocity and density of the material, and a decrease in the capillarity coefficient and open porosity without significant changes in colour and brightness. The application of the consolidating product in the proposed experimental conditions is a natural method, compatible with the petrological characteristics of the substrate, without secondary damages on the stone, being an effective method to improve the durability of carbonate stones.

Título traducido de la contribuciónEvaluation of a consolidation treatment in dolostones by mean of calcium hydroxide nanoparticles in high relative humidity conditions
Idioma originalEspañol
Páginas (desde-hasta)85-92
Número de páginas8
PublicaciónBoletin de la Sociedad Espanola de Ceramica y Vidrio
Volumen50
N.º2
DOI
EstadoPublicada - 2011
Publicado de forma externa

Palabras clave

  • Calcium carbonate polymorphs
  • Calcium hydroxide nanoparticles
  • Consolidation
  • Relative humidity
  • Stone

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