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dc.contributor.authorFreire, T.pt_BR
dc.contributor.authorSantos Silva, A.pt_BR
dc.contributor.authorVeiga, M. R.pt_BR
dc.contributor.authorBrito, J.pt_BR
dc.contributor.authorSchlütter, F.pt_BR
dc.description.abstractIn this paper the characterization of a gypsum plaster sample from the end of the 19th century simulating imperial red porphyry using a multi-analytical approach is presented and discussed. The results of X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TGA-DTA), physical and mechanical properties are summarized. In order to have further insight into the microstructure, polarized light microscopy (PLM), scanning electron microscopy coupled with energy dispersive X-ray spectrometer (SEMEDS), and micro Raman spectroscopy analyzes were also made. They helped to clarify the main issues raised by the other complementary analytical techniques and allowed the establishment of interrelations between the different properties, providing important information about the materials, the skills, and the technological development involved in the art of imitating noble stones with gypsum pastes. This study also contributes to our knowledge concerning the preservation of these types of elements that are important in the context of European decorative arts and rarely reported in the literature.pt_BR
dc.publisherCambridge University Presspt_BR
dc.subjectMulti-analytical characterizationpt_BR
dc.subjectMultiphase gypsum plasterspt_BR
dc.subjectGypsum technologypt_BR
dc.titleNatural or artificial? Multi-analytical study of a scagliola from Estoi palace simulating imperial red porphyrypt_BR
dc.description.commentsM.T.F.’s PhD research study was supported by the scholarship SFRH/BD/40128/2007 from Fundação para a Ciência e Tecnologia (FCT). The authors would like to thank the technicians Paula Menezes from the Materials Department of LNEC, and Ana Duarte, Dora Santos, and Bento Sabala from the Buildings Department, for their support on the execution of the experimental work; LNEC for the support within the project 0204/11/17692 Materials with Historical Interest—Durability and Characterization, and the research center CERIS from Instituto Superior Técnico, University of Lisbon.pt_BR
dc.description.volumeVolume 22, Issue 6pt_BR
dc.description.magazineMicroscopy and Microanalysispt_BR
Appears in Collections:DM/NMM - Comunicações a congressos e artigos de revista

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