Background Literature on mortars has mainly focused on the identification and characterization of their components in order to assign them to a specific historical period, after accurate classification. For this purpose, different analytical techniques have been proposed. Aim of the present study was to verify whether the combination of thermal analysis and chemometric methods could be used to obtain a fast but correct classification of ancient mortar samples of different ages (Roman era and Renaissance). Results Ancient Roman frescoes from Museo Nazionale Romano (Terme di Diocleziano, Rome, Italy) and Renaissance frescoes from Sistine Chapel and Old Vatican Rooms (Vatican City) were analyzed by thermogravimetry (TG) and differential thermal analysis (DTA). Principal Component analysis (PCA) on the main thermal data evidenced the presence of two clusters, ascribable to the two different ages. Inspection of the loadings allowed to interpret the observed differences in terms of the experimental variables. Conclusions PCA allowed differentiating the two kinds of mortars (Roman and Renaissance frescoes), and evidenced how the ancient Roman samples are richer in binder (calcium carbonate) and contain less filler (aggregate) than the Renaissance ones. It was also demonstrated how the coupling of thermoanalytical techniques and chemometric processing proves to be particularly advantageous when a rapid and correct differentiation and classification of cultural heritage samples of various kinds or ages has to be carried out.

Suitable classification of mortars from ancient roman and renaissance frescoes using thermal analysis and chemometrics / Tomassetti, Mauro; Marini, Federico; Campanella, Luigi; M., Positano; F., Marinucci. - In: CHEMISTRY CENTRAL JOURNAL. - ISSN 1752-153X. - STAMPA. - 9:(2015), pp. 23-1-23-7. [10.1186/s13065-015-0098-z]

Suitable classification of mortars from ancient roman and renaissance frescoes using thermal analysis and chemometrics

TOMASSETTI, Mauro
;
MARINI, Federico;CAMPANELLA, Luigi;
2015

Abstract

Background Literature on mortars has mainly focused on the identification and characterization of their components in order to assign them to a specific historical period, after accurate classification. For this purpose, different analytical techniques have been proposed. Aim of the present study was to verify whether the combination of thermal analysis and chemometric methods could be used to obtain a fast but correct classification of ancient mortar samples of different ages (Roman era and Renaissance). Results Ancient Roman frescoes from Museo Nazionale Romano (Terme di Diocleziano, Rome, Italy) and Renaissance frescoes from Sistine Chapel and Old Vatican Rooms (Vatican City) were analyzed by thermogravimetry (TG) and differential thermal analysis (DTA). Principal Component analysis (PCA) on the main thermal data evidenced the presence of two clusters, ascribable to the two different ages. Inspection of the loadings allowed to interpret the observed differences in terms of the experimental variables. Conclusions PCA allowed differentiating the two kinds of mortars (Roman and Renaissance frescoes), and evidenced how the ancient Roman samples are richer in binder (calcium carbonate) and contain less filler (aggregate) than the Renaissance ones. It was also demonstrated how the coupling of thermoanalytical techniques and chemometric processing proves to be particularly advantageous when a rapid and correct differentiation and classification of cultural heritage samples of various kinds or ages has to be carried out.
2015
mortars; ancient roman frescoes; renaissance frescoes; thermal analysis; principal component analysis (PCA)
01 Pubblicazione su rivista::01a Articolo in rivista
Suitable classification of mortars from ancient roman and renaissance frescoes using thermal analysis and chemometrics / Tomassetti, Mauro; Marini, Federico; Campanella, Luigi; M., Positano; F., Marinucci. - In: CHEMISTRY CENTRAL JOURNAL. - ISSN 1752-153X. - STAMPA. - 9:(2015), pp. 23-1-23-7. [10.1186/s13065-015-0098-z]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/784326
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