Mineralogical analysis of mortars in the walls of Ávila (Spain) and its surroundings
| Autor: | Isabel Sonsoles de Soto García, Rosario García Giménez, María de los Reyes de Soto García |
|---|---|
| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Ciencias, Nafarroako Unibertsitate Publikoa. Zientziak Saila, UAM. Departamento de Geología y Geoquímica |
| Rok vydání: | 2019 |
| Předmět: |
Thenardite
lcsh:QE351-399.2 Ávila 0211 other engineering and technologies Geochemistry Wall Weathering Granitic rocks 02 engineering and technology engineering.material Feldspar Mortars Petrography chemistry.chemical_compound 021105 building & construction Geología Quartz Calcite lcsh:Mineralogy Geology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology chemistry Spain visual_art engineering visual_art.visual_art_medium Halite Mortar 0210 nano-technology |
| Zdroj: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname Minerals, Vol 9, Iss 6, p 381 (2019) Biblos-e Archivo: Repositorio Institucional de la UAM Universidad Autónoma de Madrid Biblos-e Archivo. Repositorio Institucional de la UAM Academica-e: Repositorio Institucional de la Universidad Pública de Navarra Universidad Pública de Navarra Digital.CSIC. Repositorio Institucional del CSIC Minerals Volume 9 Issue 6 |
| Popis: | This article belongs to the Special Issue Petrography of Construction Materials: Compositional, Mineralogical and Textural Features. The present article evaluated the mineralogical composition of 85 mortar samples from some emblematic monuments of Ávila city (Spain), which were collected during the restoration of the monuments. The aim of this article is to try to extract the relationship between the composition and the origin of the raw materials, as well as to identify possible alterations in the samples. The study of the samples was carried out using visual and petrographic techniques such as stereoscopic microscope, XRD, and SEM/EDX analysis. The main components of the mortars were calcite, feldspar and quartz, although small amounts of phyllosilicates were also identified. The minerals of the mortars came from the surroundings of the city, and some of the samples presented evident alteration of the original materials due to humidity, salt concentration, and biological weathering, possibly inducted by unfortunate effects of the restoration. Finally, a study of the salts present in some mortars showed that most samples display contamination of soluble salts such as halite, thenardite, hexaedrite, and carnalite. This investigation offers fresh insight into historic building activity and related techniques, and should provide knowledge useful for restoration and conservation processes. |
| Databáze: | OpenAIRE |
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