Colors, Materials, and Techniques in Historical Buildings in Rome : Diagnostic Investigations and Case Studies in Studies in conservation, Vol.68 N°3-4(2023; April-May) (2023-04-03)

Public ISBD [article]  inStudies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 365-379 Titre : Colors, Materials, and Techniques in Historical Buildings in Rome : Diagnostic Investigations and Case Studies Type de document : texte imprimé Année de publication : 2023 Article en page(s) : Pages 365-379 Langues : Anglais (eng) Catégories : Couleur en architecture -- Façades -- Rome -- 20e siècle -- Conservation et restauration Essais (technologie) Fourier, Spectroscopie infrarouge à transformée de Microscopie électronique à balayage Monuments historiques -- Conservation et restauration -- Datation Monuments historiques -- Façades -- Rome -- 20e siècle -- Conservation et restauration Pigments -- Analyse Stratigraphie Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT In the last few years, the study of the surface color of historical buildings has progressed as part of conservation and restoration efforts to comply with the aesthetics of historical and pre-existing materials. The main critical element related to this type of study is represented by the succession of various interventions of restoration and maintenance over time that has altered the original aesthetics of monuments by using materials and colors selected according to criteria, trends, and needs of succeeding historical eras. In this paper, the investigation of plasters and colored finishing layers applied on two historical buildings located in Rome and dating to the early 1900s is reported. Results were obtained through a specific diagnostic investigation plan focused on microscopic, morphological, and chemical characterizations of plasters and colored layers detected on the monument surfaces. All post-intervention phases and dates have been identified by comparing the results obtained with historical data. Important information was uncovered that helps in tracing the original aesthetic conception of the buildings and in planning restoration approaches which can be compatible both aesthetically and materially with the original work. [article] Colors, Materials, and Techniques in Historical Buildings in Rome : Diagnostic Investigations and Case Studies [texte imprimé] . - 2023 . - Pages 365-379. Langues : Anglais (eng) in Studies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 365-379 Catégories : Couleur en architecture -- Façades -- Rome -- 20e siècle -- Conservation et restauration Essais (technologie) Fourier, Spectroscopie infrarouge à transformée de Microscopie électronique à balayage Monuments historiques -- Conservation et restauration -- Datation Monuments historiques -- Façades -- Rome -- 20e siècle -- Conservation et restauration Pigments -- Analyse Stratigraphie Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT In the last few years, the study of the surface color of historical buildings has progressed as part of conservation and restoration efforts to comply with the aesthetics of historical and pre-existing materials. The main critical element related to this type of study is represented by the succession of various interventions of restoration and maintenance over time that has altered the original aesthetics of monuments by using materials and colors selected according to criteria, trends, and needs of succeeding historical eras. In this paper, the investigation of plasters and colored finishing layers applied on two historical buildings located in Rome and dating to the early 1900s is reported. Results were obtained through a specific diagnostic investigation plan focused on microscopic, morphological, and chemical characterizations of plasters and colored layers detected on the monument surfaces. All post-intervention phases and dates have been identified by comparing the results obtained with historical data. Important information was uncovered that helps in tracing the original aesthetic conception of the buildings and in planning restoration approaches which can be compatible both aesthetically and materially with the original work.

Investigating Nineteenth Century Gel Mediums: From Historical Recipes to Model Systems / Université Paris-Sorbonne (Paris) in Studies in conservation, Vol.68 N°3-4(2023; April-May) (2023-04-03)

Public ISBD [article]  inStudies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 357-364 Titre : Investigating Nineteenth Century Gel Mediums: From Historical Recipes to Model Systems Type de document : texte imprimé Auteurs : Université Paris-Sorbonne (Paris), Auteur Année de publication : 2023 Article en page(s) : Pages 357-364 Langues : Anglais (eng) Catégories : Colloïdes Fourier, Spectroscopie infrarouge à transformée de Gélification -- Teneur en plomb Liants -- 19e siècle -- Formules et recettes Peinture -- Matériaux -- 19e siècle -- Composition chimique Vernis Mots-clés : Megilp  Métal-résine  Gumtion Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Gelled mediums were widely used during the nineteenth century, added to paint on the palette to modify its rheological, optical, and drying properties. Many variations of gelled mediums exist in the literature, all with the common basis of mastic resin or varnish, drying oil, and a lead compound. With the aim of unveiling the chemistry of such systems, reconstructions were carried out not only following the historical recipes, but in addition, exploring variations and simplifications to get a better understanding of the key ingredients and interactions inducing gelation. Different parameters were tested to establish whether these have an impact on the gelation mechanisms, particularly the influence of the nature and proportions of the ingredients and the preparation process. These reconstructions and their FTIR characterisation reveal the formation of metal-resin soaps, but also underline the specific role of lead in the gelation. [article] Investigating Nineteenth Century Gel Mediums: From Historical Recipes to Model Systems [texte imprimé] / Université Paris-Sorbonne (Paris), Auteur . - 2023 . - Pages 357-364. Langues : Anglais (eng) in Studies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 357-364 Catégories : Colloïdes Fourier, Spectroscopie infrarouge à transformée de Gélification -- Teneur en plomb Liants -- 19e siècle -- Formules et recettes Peinture -- Matériaux -- 19e siècle -- Composition chimique Vernis Mots-clés : Megilp  Métal-résine  Gumtion Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Gelled mediums were widely used during the nineteenth century, added to paint on the palette to modify its rheological, optical, and drying properties. Many variations of gelled mediums exist in the literature, all with the common basis of mastic resin or varnish, drying oil, and a lead compound. With the aim of unveiling the chemistry of such systems, reconstructions were carried out not only following the historical recipes, but in addition, exploring variations and simplifications to get a better understanding of the key ingredients and interactions inducing gelation. Different parameters were tested to establish whether these have an impact on the gelation mechanisms, particularly the influence of the nature and proportions of the ingredients and the preparation process. These reconstructions and their FTIR characterisation reveal the formation of metal-resin soaps, but also underline the specific role of lead in the gelation.

Investigations of Painting Techniques : Edirne Süleyman Pasha Mosque Wall Paintings in Studies in conservation, Vol.68 N°3-4(2023; April-May) (2023-04-03)

Public ISBD [article]  inStudies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 418-431 Titre : Investigations of Painting Techniques : Edirne Süleyman Pasha Mosque Wall Paintings Type de document : texte imprimé Année de publication : 2023 Article en page(s) : Pages 418-431 Langues : Anglais (eng) Catégories : Edirne (Turquie) -- Selimiye camisi Fourier, Spectroscopie infrarouge à transformée de Microscopie électronique à balayage Mosquées -- Turquie -- Conservation et restauration Peinture à fresque -- Empire ottoman -- Technique Peinture et décoration murales -- Empire ottoman -- Conservation et restauration Peinture et décoration murales -- Empire ottoman -- Technique Peinture et décoration murales -- Matériaux -- Analyse Spectroscopie des rayons X Spectroscopie Raman Mots-clés : Kalem işi Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Decorative wall paintings created in the Ottoman era are called kalem işi, and they are generally created using various pigments and binding media on dry rendering, or via lime-paint technique. However, detection of some decorative wall paintings that were applied on wet plaster in Süleyman Pasha Mosque located in Edirne, Turkey, has led to a more detailed analytical examination. Our study aims to research the techniques used on some painting fragments which were found while removing cement renderings during the restoration of the Mosque. The fragments were revealed in 2019 and were taken under protection as these were stylistically different from the existing paintings of the Mosque. The original location of the fragments on the wall could not be located and in situ conservation is not possible, but research continues. Initially, traces of preparatory drawing, which is thought to be the incising technique, were found on the paintings drawn on the rendering fragments. Then, SEM-EDX, FTIR spectroscopy, confocal Raman spectroscopy, and PED-XRF analyses were carried out along with examinations by optical microscopy. Following these results, experimental reconstructions of the paintings were made on test materials and a story about the painting techniques was revealed, indicating that these paintings were drawn on wet rendering (fresco). Therefore, it is considered that there may be different wall painting techniques in Ottoman architecture and that research in this direction should be increased. [article] Investigations of Painting Techniques : Edirne Süleyman Pasha Mosque Wall Paintings [texte imprimé] . - 2023 . - Pages 418-431. Langues : Anglais (eng) in Studies in conservation > Vol.68 N°3-4(2023; April-May) (2023-04-03) . - Pages 418-431 Catégories : Edirne (Turquie) -- Selimiye camisi Fourier, Spectroscopie infrarouge à transformée de Microscopie électronique à balayage Mosquées -- Turquie -- Conservation et restauration Peinture à fresque -- Empire ottoman -- Technique Peinture et décoration murales -- Empire ottoman -- Conservation et restauration Peinture et décoration murales -- Empire ottoman -- Technique Peinture et décoration murales -- Matériaux -- Analyse Spectroscopie des rayons X Spectroscopie Raman Mots-clés : Kalem işi Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : ABSTRACT Decorative wall paintings created in the Ottoman era are called kalem işi, and they are generally created using various pigments and binding media on dry rendering, or via lime-paint technique. However, detection of some decorative wall paintings that were applied on wet plaster in Süleyman Pasha Mosque located in Edirne, Turkey, has led to a more detailed analytical examination. Our study aims to research the techniques used on some painting fragments which were found while removing cement renderings during the restoration of the Mosque. The fragments were revealed in 2019 and were taken under protection as these were stylistically different from the existing paintings of the Mosque. The original location of the fragments on the wall could not be located and in situ conservation is not possible, but research continues. Initially, traces of preparatory drawing, which is thought to be the incising technique, were found on the paintings drawn on the rendering fragments. Then, SEM-EDX, FTIR spectroscopy, confocal Raman spectroscopy, and PED-XRF analyses were carried out along with examinations by optical microscopy. Following these results, experimental reconstructions of the paintings were made on test materials and a story about the painting techniques was revealed, indicating that these paintings were drawn on wet rendering (fresco). Therefore, it is considered that there may be different wall painting techniques in Ottoman architecture and that research in this direction should be increased.

The Technical Analysis and Conservation of John La Farge’s Newport Congregational Church Mural Decorations (1880) in Newport, Rhode Island in Studies in conservation, Vol.68 N°1-2(2023; January-February) (2023-01-01)

Public ISBD [article]  inStudies in conservation > Vol.68 N°1-2(2023; January-February) (2023-01-01) . - P. 193-209 Titre : The Technical Analysis and Conservation of John La Farge’s Newport Congregational Church Mural Decorations (1880) in Newport, Rhode Island Type de document : texte imprimé Année de publication : 2023 Article en page(s) : P. 193-209 Langues : Anglais (eng) Catégories : Chromatographie en phase gazeuse Cire d'abeille -- Dans l'art -- 19e siècle -- Analyse Décoration intérieure -- Matériaux -- 19e siècle -- Analyse Décoration intérieure -- Matériaux -- 19e siècle -- Formules et recettes Détrempe (peinture) -- Analyse Église -- Newport (R.I., États-Unis) -- 19e siècle -- Conservation et restauration Fourier, Spectroscopie infrarouge à transformée de La Farge, John (1835-1910) Microscopie électronique à balayage Peinture et décoration murales -- Newport (R.I., États-Unis) -- 19e siècle -- Conservation et restauration Pigments -- 19e siècle -- Analyse Résines fossiles -- Dans l'art -- 19e siècle -- Analyse Spectrométrie de masse Spectroscopie des rayons X Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : John La Farge (1835–1910) is regarded as an innovator of American interior decoration. His materials and techniques successfully created unique and eye-catching effects across the interior surfaces of monumental buildings. The recent conservation treatment of the Newport Congregational Church in Newport, Rhode Island afforded the opportunity to perform the first comprehensive analysis of one such painted interior. Materials analyses of the media and pigments were carried out using Fourier transform infrared spectroscopy (FTIR), gas chromatography-mass spectrometry (GC-MS), and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX). In addition, reconstructions of La Farge’s medium were prepared based on a number of available archival paint recipes in order to further inform the analysis and to help develop a better understanding of the materials La Farge likely used for specific passages and colors. The results of the project suggest that La Farge primarily achieved his varied surfaces with two mediums: distemper-bound passages juxtaposed with areas bound in a mixture of beeswax and larch balsam diluted with solvents. Analysis, archival research, and reconstructions were ultimately used to illustrate the vulnerabilities of La Farge’s surfaces but also to reveal the artist’s original intent and technique. [article] The Technical Analysis and Conservation of John La Farge’s Newport Congregational Church Mural Decorations (1880) in Newport, Rhode Island [texte imprimé] . - 2023 . - P. 193-209. Langues : Anglais (eng) in Studies in conservation > Vol.68 N°1-2(2023; January-February) (2023-01-01) . - P. 193-209 Catégories : Chromatographie en phase gazeuse Cire d'abeille -- Dans l'art -- 19e siècle -- Analyse Décoration intérieure -- Matériaux -- 19e siècle -- Analyse Décoration intérieure -- Matériaux -- 19e siècle -- Formules et recettes Détrempe (peinture) -- Analyse Église -- Newport (R.I., États-Unis) -- 19e siècle -- Conservation et restauration Fourier, Spectroscopie infrarouge à transformée de La Farge, John (1835-1910) Microscopie électronique à balayage Peinture et décoration murales -- Newport (R.I., États-Unis) -- 19e siècle -- Conservation et restauration Pigments -- 19e siècle -- Analyse Résines fossiles -- Dans l'art -- 19e siècle -- Analyse Spectrométrie de masse Spectroscopie des rayons X Index. décimale : 7.025 Dommages. Conservation. Protection Résumé : John La Farge (1835–1910) is regarded as an innovator of American interior decoration. His materials and techniques successfully created unique and eye-catching effects across the interior surfaces of monumental buildings. The recent conservation treatment of the Newport Congregational Church in Newport, Rhode Island afforded the opportunity to perform the first comprehensive analysis of one such painted interior. Materials analyses of the media and pigments were carried out using Fourier transform infrared spectroscopy (FTIR), gas chromatography-mass spectrometry (GC-MS), and scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX). In addition, reconstructions of La Farge’s medium were prepared based on a number of available archival paint recipes in order to further inform the analysis and to help develop a better understanding of the materials La Farge likely used for specific passages and colors. The results of the project suggest that La Farge primarily achieved his varied surfaces with two mediums: distemper-bound passages juxtaposed with areas bound in a mixture of beeswax and larch balsam diluted with solvents. Analysis, archival research, and reconstructions were ultimately used to illustrate the vulnerabilities of La Farge’s surfaces but also to reveal the artist’s original intent and technique.

Treatment of the stained glass windows of Astorga Cathedral (León - Spaint) using cleaning gels / Andrés Sánchez ; Isabel Herráez ; Valentín Nieves in Conservation restauration des biens culturels (CRBC), no.9(1997:mai) (1997-05-01)

Public ISBD [article]  inConservation restauration des biens culturels (CRBC) > no.9(1997:mai) (1997-05-01) . - P. 9-14 Titre : Treatment of the stained glass windows of Astorga Cathedral (León - Spaint) using cleaning gels : études de cas Type de document : texte imprimé Auteurs : Andrés Sánchez, Auteur ; Isabel Herráez, Auteur ; Valentín Nieves, Auteur Année de publication : 1997 Article en page(s) : P. 9-14 Langues : Anglais (eng) Catégories : Cathédrales -- Astorga (Espagne) -- 15e siècle Fourier, Spectroscopie infrarouge à transformée de Gypse Spectroscopie des rayons X Vitraux -- 16e siècle -- Détérioration Vitraux -- 16e siècle -- Nettoyage Vitraux -- Astorga (Espagne) -- 16e siècle -- Conservation et restauration Index. décimale : 7.025 Dommages. Conservation. Protection [article] Treatment of the stained glass windows of Astorga Cathedral (León - Spaint) using cleaning gels : études de cas [texte imprimé] / Andrés Sánchez, Auteur ; Isabel Herráez, Auteur ; Valentín Nieves, Auteur . - 1997 . - P. 9-14. Langues : Anglais (eng) in Conservation restauration des biens culturels (CRBC) > no.9(1997:mai) (1997-05-01) . - P. 9-14 Catégories : Cathédrales -- Astorga (Espagne) -- 15e siècle Fourier, Spectroscopie infrarouge à transformée de Gypse Spectroscopie des rayons X Vitraux -- 16e siècle -- Détérioration Vitraux -- 16e siècle -- Nettoyage Vitraux -- Astorga (Espagne) -- 16e siècle -- Conservation et restauration Index. décimale : 7.025 Dommages. Conservation. Protection

Vol.17 no1(2002) - 2002-01-01 - Photographic Conservation (Bulletin de Conservation perspectives : the Getty Conservation Institute newsletter)    

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Vol.62 N°5-6(2017 ; July-August) - 2017-07-01 (Bulletin de Studies in conservation)  

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