Multianalytical study of neapolitan yellow tuff rotting: Archaeological park of herculaneum as a representative case of study

IF 3.5 2区 综合性期刊 0 ARCHAEOLOGY
Iñaki Vázquez-de la Fuente , Idoia Etxebarria , Ilaria Costantini , Jennifer Huidobro , Marco Veneranda , Nagore Prieto-Taboada , Giuseppe Di Girolami , Aitor Larrañaga , Angela Di Lillo , Marina Caso , Mario Notomista , Rossella Di Lauro , Kepa Castro , Gorka Arana , Juan Manuel Madariaga
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引用次数: 0

Abstract

The eruption of Mount Vesuvius in 79 CE buried Herculaneum under volcanic material, preserving its structures and organic materials remarkably well. Today, this site is known as the Archaeological Park of Herculaneum. Unfortunately, exposure to environmental factors has led to the degradation of Neapolitan Yellow Tuff (NYT), a material commonly used in Roman buildings, through a process known as rotting. This study, conducted by the Herculaneum Archaeological Park (PAERCO) and the Herculaneum Conservation Project (HCP) in collaboration with the IBeA research group (Research and Innovation in Analytical Chemistry, University of the Basque Country UPV/EHU), aimed to understand the tuff rotting process. By combining in-situ non-destructive analyses with laboratory investigations, it was determined, that NYT rotting is caused by the capillary ascent of saline-rich ground humidity, leading to internal stress from salt crystallization, with sodium sulphate identified as a critical threat. Furthermore, the analyses indicated that salts chemically react with NYT's minerals, causing the selective loss of its cementing material (zeolites). The study of soil samples revealed that the risk of rotting varies across the park due to differences in salt concentration and composition. These insights will help PAERCO and HCP identify high-risk areas and implement preventive measures, including the use of portable XRF instruments for ongoing monitoring and preservation of the site's historic structures.
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来源期刊
Journal of Cultural Heritage
Journal of Cultural Heritage 综合性期刊-材料科学:综合
CiteScore
6.80
自引率
9.70%
发文量
166
审稿时长
52 days
期刊介绍: The Journal of Cultural Heritage publishes original papers which comprise previously unpublished data and present innovative methods concerning all aspects of science and technology of cultural heritage as well as interpretation and theoretical issues related to preservation.
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