Texture and mineralogy influence on durability: The Macigno sandstone
Resumen: The behaviour of ornamental stones in response to environmental changes or interactions is crucial when dealing with the conservation of cultural heritage.Weathering factors affect each rock differently, depending on structure, mineralogy, and extraction and implementation techniques. This work focuses on the Macigno sandstone, a dimension stone often employed in Tuscany over the centuries. A thorough mineralogical (optical microscopy, scanning electron microscopy and X-ray powder diffraction) and petrophysical characterization (i.e. mercury intrusion porosimetry, X-ray computed tomography, hygroscopic adsorption behaviour, ultrasounds, image analysis and capillary uptake) was made of the sandstone type extracted in the area of Greve in Chianti. The lithotype shows mineralogical (i.e. presence of mixed-layer phyllosilicates) and microporosimetric features, leading to a high susceptibility to relative humidity variation. Moreover, the influence of swelling minerals is related to weathering due to saline solution. The joint application of petrographic and petrophysical techniques allows an understanding of the characteristic weathering pattern of exfoliation (i.e. detachment of multiple thin stone layers, centimetre scale, that are sub-parallel to the stone surface).
Idioma: Inglés
DOI: 10.1144/qjegh2016-107
Año: 2017
ISSN: 1470-9236

Factor impacto: 0.818 (2017)
Categ. JCR: GEOSCIENCES, MULTIDISCIPLINARY rank: 168 / 189 = 0.889 (2017) - Q4 - T3
Categ. JCR: ENGINEERING, GEOLOGICAL rank: 32 / 36 = 0.889 (2017) - Q4 - T3

Tipo y forma: Article (Published version)
Área (Departamento): Área Petrología y Geoquímica (Dpto. Ciencias de la Tierra)

Creative Commons You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. If you remix, transform, or build upon the material, you may not distribute the modified material.

Exportado de SIDERAL (2018-07-23-11:56:41)

Este artículo se encuentra en las siguientes colecciones:

 Record created 2018-01-12, last modified 2018-07-23

Versión publicada:
Rate this document:

Rate this document:
(Not yet reviewed)