Related Papers
The conservation of panel paintings and related objects
kate seymour
Until the early 17th century almost all portable paintings were created on wood supports, including masterpieces by famous painters, ranging from Giotto to Dürer to Rembrandt. The structural conservation of these paintings requires specific knowledge and skills as the supports are susceptible to damage caused by unstable environmental conditions. Unfortunately, past structural interventions often caused significant damage due to insufficient knowledge of the behaviour of the wood panels, glue and paint layers. Over the last fifty years, the field has developed treatment strategies based on interdisciplinary collaboration and on the knowledge of specialist conservators. Most current conservation protocols rely on empirical knowledge of conservators and are not necessarily based on a scientific understanding of the nature and behaviour of wood and paint layers. In order to move the field forward, it is imperative to strengthen scientific research into the production methods, ageing an...
Journal of Cultural Heritage
Wood science and conservation: Activities and achievements of COST Action IE0601
2012 •
Luca Uzielli
Journal of Cultural Heritage
The Deformometric Kit: A method and an apparatus for monitoring the deformation of wooden panels
2012 •
M. Togni, Luca Uzielli
achievements of COST Action IE0601
2013 •
Luca Uzielli
HAL is a multi-disciplinary open access archive for the deposit and dissemination of sci-entific research documents, whether they are pub-lished or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et a ̀ la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissem*nts d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
Revista de Chimie
Influence of Organic Solvents and Dispersions on Wooden Supports of Paintings
2015 •
Irina C . A . Sandu
This study presents the data regarding the influence of two organic solvents (ethylic alcohol and Red Petroleum from Campeni), mixed with bee propolis, on different wood essences. The impact of these systems was evaluated by studying several physical-structural dynamic characteristics of the treated samples. The shrinkage of lime, poplar, fir and oak wood was studied on three sections (longitude-L, tangential-T and radial-R), for four different variations of atmospheric humidity (100, 85, 65, 25% RH), by gradually lowering the value (100%→85%, 85%→65%, 65%→25% and 25%→0%). In order to evaluate the impact of the treatment, two chemometric characteristics were taken into consideration: difference of shrinkage (ΔL, ΔR and ΔT) and the ratio of those differences (ΔT/ΔL, ΔT/ΔR and ΔR/ΔL). At the end of the paper, the volumetric shrinkage vas studied, alongside with the density and porosity variations of the wood. In order to evaluate the impact of these systems several chemometric characteristics were used: ΔV, Δρ and Δp. The obtained results have shown that poplar tree is virtually unaffected by the two treatments, the lime tree is slightly influenced, while the fir tree and oak tree are the most affected, because the used solutions easily dissolve their organic components. These components leave the resinous channels and pores of the oak tree, thus changing the specific weight and porosity. After the dissolution of the organic components present in natural wood, these solutions create a nano-coating on the surface of the anatomical elements, which confer detectable behaviours only to the wood species containing volatile components that are not compatible with the studied organic solutions. The behaviours can be detected during the interactions of the above mentioned wood species with the hygroscopic moisture in the atmosphere.
Optical techniques in wooden painting diagnostics
Dario Ambrosini
Optical techniques, transferred from other fields or developed ad hoc, can be successfully used in diagnosing wooden paintings. The state of the art and the evolution of different optical non destructive techniques, such as holographic interferometry, electronic speckle pattern interferometry (ESPI), shearography and speckle decorrelation are considered. Some open problems and personal viewpoints are included as well as considerations on some recent developments and future trends.
Journal of Cultural Heritage
Dating trials of wooden historic artefacts through FT-IR spectroscopy
2019 •
Benedetto Pizzo
2011_THE SAFEGUARD OF CULTURAL HERITAGE_A CHALLENGE FROM THE PAST FOR THE EUROPE OF TOMORROW Edited by Marco Fioravanti and Saverio Mecca
Carolina Capitanio
A portable FTIR study of mortar model samples. Comparison among innovative and traditional techniques
2018 •
Antonio Sansonetti
In this research a portable non-destructive technique, the external reflection infrared spectroscopy (portable-FTIR), is compared with the traditional analytical techniques, such as powder X Ray diffraction (XRD), optical and petrographic microscopy, scanning electron microscopy (SEM) and traditional bench transmission FTIR. Advantages and drawbacks of this technique are here discussed, taking into account that it was never applied systematically to mortars and cement materials
RESTORATION AND PRESERVATION OF THE WOODEN CEILING OF AL-ASHRAF QAYTBAY MADRESSA, CAIRO EGYPT
Nabil A. Bader
The painted ceilings of Qaitbay's madrassa is one of the Egypt's great monuments and among the oldest in the Islamic civilization, dating back to the Garkssy Mamluk period (879 AH/1474 AD). It represents an exceptional example of the quality and extent of medieval woodworking in Egypt. The wooden ceiling of Qaitbay's madrassa had been affected by an extensive deterioration due to many factors, such as loss of colors, cracking, soot deposition, and losses of materials/units, insects' holes, and fungi growth, in addition to formation of corrosion products of its metallic parts. The main aim of the present paper is the characterization and investigation of the different components employed in the decorated ceiling of Madrassa of Qaytbay as wood units, painting ground, pigments, gilding, binding media and products of deterioration. Scanning Electron Microscope coupled with EDX analysis, Optical Light Microscope, X-ray diffraction and Infrared analysis were applied for investigation. Biological study was done. We present the results of identifying the wood species and insects of the ceiling of the Qaitbay's madrassa, which the aim of the providing information not only of the benefit to restoration but also to the historical- artistic background of the artifacts. Also this paper includes the present of its state of conservation for preservation the study will include the documentation, investigation, and analysis before the intervention process. The treatment steps were documented before, during and after the restoration. Preservation of the wood ceiling was carried out including the following: cleaning (mechanical and chemical cleaning), treatment of fungi infection, consolidation and restoration.
