11 documents found, page 1 of 2
Exploring the potential of cuttlebone waste to produce building lime
Ferraz, E.; Gamelas, José A. F.; Coroado, J.; Monteiro, C. M. B.; Rocha, F. T.The goal of this study is to find a practicable way to recycle cuttlebone waste in the production of lime. It was studied the behavior of calcium oxide obtained from the calcination of this waste at 900, 1000 and 1100 ºC and, after wet slaking, the produced lime was characterized. All the results were compared to calcium oxide or to hydrated lime obtained from commercial limestone. According to the slaking resu...
Estudo das argamassas do Cais das Colunas (Séc. XVIII), Lisboa, Portugal
Antunes, Alexandra de Carvalho; Coroado, J.; Santos Silva, A.; Veiga, M.R.O Cais das Colunas é o único cais monumental construído, em Lisboa, no âmbito do projeto de reconstrução da cidade depois do terramoto de 1755. O cais foi parcialmente desmontado em 1997 e reconstruído em 2008. Durante os trabalhos de reposição foram recolhidas amostras de argamassas originais, datáveis das décadas de 1770 a 1790, do núcleo do embarcadouro, tendo em vista o seu estudo e caracterização. A metodo...
The environmental factors impact on the conservation of an historic marine quay...
Antunes, A. C.; Coroado, J.; Boaventura, D.; Rocha, F.Changes effected by environmental factors on the biological colonization of an historic marine limestone quay were considered, as a baseline study for the monitoring and test plan definition. Environmental factors play a fundamental role in the deterioration of stone monuments, particularly those located in a marine environment. This eighteenth century quay, situated at the Royal Square of the Portuguese capita...
The environmental factors impact on the conservation of an historic marine quay...
Antunes, A. C.; Coroado, J.; Boaventura, D.M.; Rocha, F.Changes effected by environmental factors on the biological colonization of an historic marine limestone quay were considered, as a baseline study for the monitoring and test plan definition. Environmental factors play a fundamental role in the deterioration of stone monuments, particularly those located in a marine environment. This eighteenth century quay, situated at the Royal Square of the Portuguese capita...
Micro-XRF for characterization of Moroccan glazed ceramics and Portuguese tiles
Guilherme, A.; Manso, M.; Pessanha, S.; Zegzouti, A.; Elaatmani, M.; Bendaoud, R.; Coroado, J.; Santos, J. M. F. dos; Carvalho, M. L.
Caracterização composicional e tipológica da cerâmica industrial do território ...
Triães, R.; Coroado, J.; Rocha, F.The existence of a significant number of construction ceramics materials and loom weights Conimbriga and in two villae of its territory, allowed to collect, study and organize the various forms. From the selection and sampling of these materials was possible to establish a compositional and technological characterization of this territory. The typological study of the construction ceramic materials was based on...
Study of Mural Paintings Using In Situ XRF, Confocal Synchrotron-m-XRF, m-XRD, ...
Valadas, S.; Candeias, A.E.; Mirão, J.; Tavares, D.; Coroado, J.; Simon, R.; Silva, A.S.; Gil, M.; Guilherme, A.; Carvalho, M.L.In this work, we present the results of an analytical method developed for detailed pigment identification, stratigraphy, and degradation of the paint layers of mural paintings applied in the study of the 17th century frescoes from the Misericordia Church of Odemira ~Southwest Portugal!. In situ X-ray fluores- cence spectrometry analyses were performed on three panels of the mural paintings and complemented by ...
X-ray fluorescence (conventional and 3D) and scanning electron microscopy for t...
Guilherme, A.; Coroado, J.; Santos, J. M. F. dos; Lühl, L.; Wolff, T.; Kanngießee, B.; Carvalho, M. L.This work shows the first analytical results obtained by X-Ray Fluorescence (XRF) (conventional and 3D) and Scanning Electron Microscopy with Energy Dispersive System (SEM-EDS) on original Portuguese ceramic pieces produced between the 16th and 18th centuries in Coimbra and Lisbon. Experts distinguished these productions based only on the color, texture and brightness, which originates mislabeling in some cases...
Study of mural paintings using in-situ XRF, confocal Synchrotron-μ-XRF, μ-XRD, ...
Valadas, S.; Candeias, A.; Mirão, J.; Taveres, D.; Coroado, J.; Simon, R.; Santos Silva, A.; Gil, M.; Guilherme, A.; Carvalho, M. L.In this work, we present the results of an analytical method developed for detailed pigment identification, stratigraphy, and degradation of the paint layers of mural paintings applied in the study of the 17th century frescoes from the Misericordia Church of Odemira (Southwest Portugal). In situ X-ray fluorescence spectrometry analyses were performed on three panels of the mural paintings and complemented by co...
The documental sources versus the analytical results: ground layers in Portugue...
Barata, Carolina; Cruz, A. J.; Carballo, J.; Coroado, J.; Araújo, M. E.