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Heritage 2018, 1(2), 468-478; https://doi.org/10.3390/heritage1020031

The Case Study of the Medieval Town Walls of Gubbio in Italy: First Results on the Characterization of Mortars and Binders

1
CENIMAT/I3N—Centro de Investigação em Materiais, UNINOVA—Instituto de Desenvolvimento de Novas Tecnologias, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
2
CNR Consiglio Nazionale delle Ricerche, ISMN—Instituto per lo Studio dei Materiali Nanostrutturati, Via Salaria km 29.5, Monterotondo, 00015 Rome, Italy
3
LNEG—Laboratório Nacional de Energia e Geologia, I.P., Unidade de Recursos Minerais e Geofísica, Apt. 7586, 2610-999 Amadora, Portugal
4
Dipartimento di Ingegneria dell’Impresa, Università di Roma Tor Vergata, INSTM—Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali, via della Ricerca Scientifica, 00133 Rome, Italy
5
Dipartimento di Scienze della Terra, La Sapienza Università di Roma, P.le Aldo Moro 5, 00185 Rome, Italy
*
Author to whom correspondence should be addressed.
Received: 5 November 2018 / Revised: 30 November 2018 / Accepted: 6 December 2018 / Published: 8 December 2018
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Abstract

Good conservation and restoration practices of cultural heritage assets rely on the knowledge of original materials. In the framework of the HERACLES Project (HERACLES—HEritage Resilience Against CLimate Events on Site, H2020 Grant Agreement 700395), dealing with the effects of climatic actions and natural hazards on built heritage, a set of important heritage sites are currently under study to improve their resilience against climate events. Among these are the medieval Gubbio Town Walls in Italy. The present work focuses on the mortars and binders of this monument and collected samples related to different parts of the Walls, corresponding to various historical periods of construction and interventions. They were characterized to determine their minerochemical composition, thermal behavior, and morphology. For that purpose, ex-situ laboratory techniques, such as X-ray diffraction (XRD), wavelength dispersive X-ray fluorescence (WDXRF), optical microscopy (OM), polarized light microscopy (PLM), scanning electron microscopy (SEM), and simultaneous differential thermal analysis and thermogravimetry (TG-DTA) were used to discern trends in different sampling areas due to construction/reconstruction periods and building techniques. View Full-Text
Keywords: mortars; heritage; characterization mortars; heritage; characterization
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Carvalho, F.; Lopes, A.; Curulli, A.; Da Silva, T.P.; Lima, M.M.R.A.; Montesperelli, G.; Ronca, S.; Padeletti, G.; Veiga, J.P. The Case Study of the Medieval Town Walls of Gubbio in Italy: First Results on the Characterization of Mortars and Binders. Heritage 2018, 1, 468-478.

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