Conservation of the mural paintings of the greek orthodox church dom e of saint george, old cairo-egypt
N. Abd El-Tawab,A. Mahran,K. Gad +2 more
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In this article, the authors characterized the components of the pictorial surface which consists of pigments, the binding media, the plaster layer and its support and introduced the conservation project of the mural painting which was carried out at the dome "between" 2004-20013.Abstract:
The church of Mary Girgis (Saint George) was built by Athanasius "who also founded the Church of Saints Cyrus and John". The Church was destroyed, and all the rest of the original edifice is a room which covered by huge dome known as the Wedding Hall, dating to the 14th century. The huge dome of the wedding Hall contains several mural paintings represented Coptic arts. The dome mural paintings was darkened and severely damaged as significant detachments of the painted layer and the underneath support lost their cohesion and separated into many pieces, delamination and flaking of the ceiling painting. The most important causes for the monument state of degradation were the environmental condition such as the effects of the groundwater, the presence of salts, the humidity (active in all its forms as infiltration, capillarity and condensation) and the improper previous interventions at the structural level (fillings in the cracks with gypsum mortars). The aim of this study is to characterize the components of the pictorial surface which consists of pigments, the binding media, the plaster layer and its support and introduce the conservation project of the mural painting which was carried out at the dome "between" 2004-20013. Prior to the conservation intervention, the materials were characterized by optical microscopy, polarizing microscope, scanning electron microscopy with energy dispersive X-ray spectroscopy, X-ray diffraction and X-ray fluorescence. The chemical analyses have determined the nature and composition of the materials used in the painting process (mortars, pigments, binders), have identified the causes of physical and chemical altering processes of pigment layers and provided knowledge on the execution technique. The interior painting was executed according to the Byzantine technique, on a fresco plaster (intonaco) consisting of lime mortar, pigments were obtained by mixing pigments with water. After the material characterization, the conservation and restoration of the mural painting, which including cleaning, injection grouting, fixation of the paint layer, filling of the support gaps with mortar, consolidation, restoration and completion of lost parts, were carried out.read more
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Evaluation of polyvinyl alcohol–borax/agarose (PVA–B/AG) blend hydrogels for removal of deteriorated consolidants from ancient Egyptian wall paintings
TL;DR: In this article, a new polyvinyl alcohol-borax/agarose blend hydrogel (PVA-B/AG) was used for the conservation of ancient Egyptian wall paintings.
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Study of the painted dome of the church of archangel gabriel, cairo
S. Beskhyroun,G. Mahgoub,I. El-Rifai,Hend Mahgoub,Iacopo Osticioli,Austin Nevin,Abdelrazek Elnaggar +6 more
TL;DR: In this article, a study was carried out in preparation for the conservation of the oil painted dome of Archangel Gabriel church located at Haret El Saqqayeen in Abdeen(Cairo).
References
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Pigment Compendium: A Dictionary of Historical Pigments
TL;DR: The Pigment Compendium Dictionary as mentioned in this paper is a comprehensive information source for scientists, art historians, conservators and forensic specialists, drawn together from extensive analystical research into the physical and chemical properties of pigments, this essential reference to pigment names and synonyms describes the interrelationship of different names and terms.
Journal ArticleDOI
Heterotrophic microorganisms in air and biofilm samples from Roman catacombs, with special emphasis on actinobacteria and fungi
Maria Saarela,Hanna-Leena Alakomi,Maija-Liisa Suihko,Liisa Maunuksela,Laura Raaska,Tiina Mattila-Sandholm +5 more
TL;DR: The aim of the study was to characterize the heterotrophic microbiota in surface samples and in the air of the Roman catacombs of St. Callistus and St. Domitilla and found that many of the isolates were novel species.
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Photochemical and thermal degradation of films of dammar resin
TL;DR: In this paper, Dammar resin was aged by exposure to light and heat, followed by means of ultraviolet-visible light transmission, infrared and fluorescence spectrophotometry, and gel permeation chromatography.