Publicomos

Réf.

43191

Type

article

Titre

An interdisciplinary approach to a knowledge-based restoration: the dark alteration on Matera Cathedral (Italy)

Langues

English

Auteurs

Rampazzi, Laura / Andreotti, Alessia / Bressan, Mario / Colombini, Maria Perla / Corti, Cristina / Cuzman, Oana / D'Alessandro, Nicola / Liberatore, Lolita / Palombi, Lorenzo / Raimondi, Valentina / Sacchi, Barbara / Tiano, Piero / Tonucci, Lucia / Vettori, Silvia / Zanardini, Elisabetta / Ranalli, Giancarlo

Maison d'édition

Elsevier

Date

22/07/2018

Pagination de section

529-539

Titre de la revue

Applied Surface Science

Vol. & n°

v. 458

ISSN

0169-4332

Mots-clés

limestone / chromatic alteration / causes of deterioration / biodeterioration / biological factors / calcium oxalate film / restoration techniques / cleaning / cathedrals / interdisciplinarity / World Heritage / World Heritage Sites / building materials / building techniques / historic town centres / biochemical analysis / chemical analysis / laboratory tests / mineralogical analysis / X-ray analysis / infrared spectroscopy / infrared analysis / fluorescence / laser scanning

Pays mentionnés

Italy

Monuments et sites

Santa Maria della Bruna and Sant’Eustachio Cathedral (Matera, Italy)

N° Patrimoine mondial

670

Résumé en anglais

An interdisciplinary analytical campaign was carried out on the exterior walls of the Santa Maria della Bruna and Sant’Eustachio Cathedral in Matera. Large areas of these walls have become darkened and the main objective was to evaluate the state of conservation of the stone material (a very porous, organogenic limestone called “Pietra di Matera”), and to suggest the best strategy for the current restoration. Several techniques were used in situ and ex situ-in laboratory analyses: X-ray diffraction, infrared spectroscopy, ion chromatography, pyrolysis/gas chromatography coupled with mass spectrometry, colour change measurements, laser-induced fluorescence together with biological techniques. Ex-situ and in situ cleaning tests were also carried out on the stone surface.The results showed the presence of chlorophyll and bacteria on the surface, together with sulfation and calcium oxalate films as the main decay phenomena. In addition, the determination of saccharide and egg residues suggest both biological activity and past conservative treatments as the cause of oxalate films. Data obtained from the analyses proved to be very useful for the conservation work; a complex plan of restoration was adopted, including both traditional and innovative techniques (such as biocleaning, bacterial-gel and a laser system) together with a final evaluation of several protective methods

DOI

https://doi.org/10.1016/j.apsusc.2018.07.101

Document joint

An interdisciplinary approach to a knowledge-based restoration.pdf

Licence

Creative Commons Attribution-Non Commercial-No Derivatives (BY-NC-ND)