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Changes in Petrophysical Properties of the Stone Surface due to Past Conservation Treatments in Archaeological Sites of Merida (Spain)

AutorPérez Ema, Natalia; Álvarez de Buergo, Mónica ; Bustamante, R.; Gómez-Heras, Miguel
Palabras claveArchaeological sites
Petrophysical properties
Fecha de publicación2015
CitaciónEngineering Geology for Society and Territory, 8: 521-524 (2015)
ResumenPetrophysical properties, such as porosity, permeability, density or anisotropy determine the alterability of stone surfaces from archaeological sites, and therefore, the future preservation of the material. Others, like superficial roughness or color, may point out changes due to alteration processes, natural or man-induced, for example, by conservation treatments. The application of conservation treatments may vary some of these properties forcing the stone surface to a re-adaptation to the new conditions, which could generate new processes of deterioration. In this study changes resulting from the application of consolidating and hydrophobic treatments on stone materials from the Roman Theatre (marble and granite) and the Mitreo’s House (mural painting and mosaics), both archaeological sites from Merida (Spain), are analyzed. The use of portable field devices allows us to perform analyses both on site and in laboratory, comparing treated and untreated samples. Treatments consisted of synthetic resins, consolidating (such as tetraethoxysilane TEOS) and hydrophobic products. Results confirm that undesirable changes may occur, with consequences ranging from purely aesthetic variations to physical, chemical and mechanical damages. This also permits us to check limitations in the use of these techniques for the evaluation of conservation treatments.
DescripciónEngineering Geology for Society and Territory - Volume 8: Preservation of Cultural Heritage. Editors: Lollino, G., Giordan, D., Marunteanu, C., Christaras, B., Yoshinori, I., Margottini, C. (Eds.). One out of eight IAEG XII Congress volumes on the occasion of the 50th anniversary of IAEG
Versión del editorhttp://dx.doi.org/10.1007/978-3-319-09408-3_92
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