CONSERVATION PROCESSES OF A WOODEN COFFIN COVERED WITH A BLACK RESIN LAYER AND COLORED MATERIALS IN DAHSHUR ARCHAEOLOGICAL AREA

This paper describes the results of a multi-technological analytical protocol performed on the painted surface of an Egyptian wooden coffin and documents the conservation processes of a wooden coffin covered with a black resin layer and coloured materials in Dahshur Archaeological Area dating back t...

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Veröffentlicht in:International journal of conservation science 2023-10, Vol.14 (4), p.1485-1506
Hauptverfasser: ABDELMONIEM, Abdelmoniem M., MOHAMED, Wael S., MAHMOUD, Naglaa, MOHAMED, Saleh, ABDEL-FATAH, Mostafa Ahmed, OMAR, Ali M., WALY, Nahed, HAMDY, Rim
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container_title International journal of conservation science
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creator ABDELMONIEM, Abdelmoniem M.
MOHAMED, Wael S.
MAHMOUD, Naglaa
MOHAMED, Saleh
ABDEL-FATAH, Mostafa Ahmed
OMAR, Ali M.
WALY, Nahed
HAMDY, Rim
description This paper describes the results of a multi-technological analytical protocol performed on the painted surface of an Egyptian wooden coffin and documents the conservation processes of a wooden coffin covered with a black resin layer and coloured materials in Dahshur Archaeological Area dating back to the late period. It uses visual observation, optical microscopy (OM), technical imaging, 2D and 3D programmes, and a scan made using an electron microscope coupled with an Energy Dispersive X-ray (SEM-EDX), X-ray diffraction (XRD). Wood identification was also carried out. The results showed the use of yellow ochre for the yellow painted layer; the ground layer was calcium carbonate with gypsum, and the fabric layer was linen. The conservation processes of the wooden coffin included mechanical and chemical cleaning; reassembling the separated wooden parts, ground layer, and black resin layers; filling the edge of the ground layer; and consolidating the wood, black resin, and painted layer. The conservation processes included mechanical cleaning using soft brushes, chemical cleaning using xylene and distilled water for the black resin layer and ethyl alcohol and distilled water for the painted layer, stabilisation of the separated ground layer using Paraloid B72, filling the cracks of the ground layers using glass microballoons with Paraloid B72, and consolidating the painted layer with nano-silica with Klucel G (hydroxypropyl cellulose) (0.5% concentration).
doi_str_mv 10.36868/IJCS.2023.04.16
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subjects Archaeology
Calcium carbonate
Caskets
Cellulose
Chemical cleaning
Conservation
Digital cameras
Distilled water
Documentation
Ethanol
Gypsum
Hydroxypropyl cellulose
Kings
Light microscopy
Linen
Mechanical cleaning
Microballoons
Microscopy
Optical microscopy
Photogrammetry
Pigments
Resins
Silica
Visual observation
X-ray diffraction
Xylene
title CONSERVATION PROCESSES OF A WOODEN COFFIN COVERED WITH A BLACK RESIN LAYER AND COLORED MATERIALS IN DAHSHUR ARCHAEOLOGICAL AREA
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