THE MORTAR DAMAGE AND ITS HARMFUL EFFECTS ON THE GLAZED CERAMIC TILES IN TERBANA MOSQUE – ALEXANDRIA, EGYPT

ABD-ELRAHIM, Elshaimaa; WESHAHY, Ibrahim

doi:10.21608/shedet.004.10

THE MORTAR DAMAGE AND ITS HARMFUL EFFECTS ON THE GLAZED CERAMIC TILES IN TERBANA MOSQUE – ALEXANDRIA, EGYPT

Document Type : research articles

Authors

Faculty of Archaeology, Cairo University/ Egypt

10.21608/shedet.004.10

Abstract

This research discusses the damaging factors of the mortar used to affix the glazed ceramic tiles on the walls of Terbana mosque (built in 1685, Ottoman period) in Alexandria, Egypt, and the extension of the damaged impact to the ceramic tiles. This famous, and particularly outstanding mosque with several suspended shops below it, is built in the Delta architectural style, with walls made of limestone blocks and a little red and black adobe for decorative work, a wooden roof and glazed ceramic tiles, with plants and geometric ornaments, adorn parts of the mosque walls.
Salt content in the weather of Alexandria is relatively high; this salt is the largest contributor to the deterioration factor of Terbana mosque with varying degrees of deterioration. Impacts come in different forms; salts caused disintegration of the mortar into soft powder in some places and then pushed the outer surface of the limestone and brickwork.
Where tiles have been installed in a building near the sea, they would be subject to degrees of salt deterioration, making it very difficult to prevent deterioration of the tiles or to the walls. Results from analytic methods such as scanning electron microscopy (SEM-EDX), and X-ray diffraction (XRD), reveal a high percent of crystallized salts of sodium chloride NaCl (Halite) in the fixed mortar, in the body of the tiles, and in the glaze layer on the tiles surfaces. Proposed solutions to mitigate the salts deterioration are provided.

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References

¹ Abd-Elrhim (El-Shaīmāʾ), Dirāsah taḥlīlīyah muqārnah fī taḥdīd ʾasbāb w mazāhir talaf al-mukawnāt al-mukhtalifah lilʾiksāʾāt al-khazfīyah fī al-qibāb w al-judrān al-atharīyah w taṭbīqāt al-ʿilāj w al-ṣīānah fī baʿḍ al-munshʾāt al-atharīyah al-islamīyah bil-Qāhirah, PhD., Restoration Department, Faculty of Archaeology, Cairo University, 2010.

² Al-Jazāīrlī (Yosef), Mawsuwʿat al-Jazāīrlī liʾasmāʾ shawāriʿ al-Iskandarīyah, Center of Alexandria Studies and the Mediterranean culture, Library of Alexandria, part 2, 2011.

³ Biczok (Imre), Concrete Corrosion and Concrete Protection, Publishing House of the Hungarian Academy of Science, Budapest, 1964.

⁴ Buys (Susan), The Conservation & Restoration of Ceramic, Victoria & Albert Museum, London, IFAO Bibliotheque , 1996.

⁵Byrne (Michael), Setting Tile, Taunton Press, Inc., U.S.A., 1995.

⁶ Duqmāq,(Ahmed), Mαsājid al-Iskandarīyah al-bāqīyah fī al-qarnīiīn al-thānī ʿashar w al-thālith ʿashar baʿd al-hijrah,MA., Department of Islamic Antiquities, Faculty of Archeology, Cairo University, 1994.

⁷Durbin (Lesley), Architectural Tiles, Conservation & Restoration, Elsever, Butter worth, Heinemann, 2005.

⁸ Feilden (Bernard), Conservation of Historic buildings, Technical studies in the Arts, Archeology and Architecture, Butter Worth Co. (Publishers) Ltd, England, 1982.

⁹Hamilton) Donny), Methods of Conserving Archaeological Material from Underwater Sites, Conservation Research Laboratory - Center for Maritime Archaeology and Conservation Texas A&M University, Revision Number 1, January 1, 1999.

¹⁰ Ḥemeda (Sayed), Al-taqwīm al-ʿlmī limīkanīkīat al-tshwīh al-milḥī w ʾahm maṣadirha fī al-bīiʾah al-atharīyah al-misrīyah w taʾthīriha ʿalā al-ahjār al-jīrīyah w al-ramlīyah al-mustakhdamah fī al-munshāʾt al-atharīyah mawḍwuʿ al-baḥth w ʾahm ṭuruq al-ʿilaj w al-ṣīanah, MA., Restoration Department, Faculty of Archaeology, Cairo University, 2003.

¹¹ Jaime (Villaverde), Use of clay/β-cyclodextrin formulations to obtain a slow release of a hydrophobic herbicide, Environmental Bulletin, Vol.17, no. 12b , 2008, Instituto de Recursos Naturales y Agrobiología de Sevilla (CSIC). Sevilla, Spai.

¹² Maarleveld (Thijs), and others, Manual for Activities directed at Underwater Cultural Heritage, Guidelines to the Annex of the UNESCO 2001 Convention, © UNESCO 2013, published in 2013 by the United Nations Educational, Scientific and Cultural Organization.

¹³ Mirti (Piero), Statistics applied to analysis of ceramics, Euro-Med course on materials & technologies for the conservation of cultural heritage consisting of ceramic, Perugia, Sep.28th - Oct.4th, 2000.

¹⁴ Odegaard (Nancy), Evaluation of Conservation and Preservation Practices in a Southwest Pottery Collection, Institution/Organization: University of Arizona, Arizona State Museum, January 28, 2009.

¹⁵ Pessoa (Costa), and others, Removal and analysis of soluble salts from Ancient tiles, in: studies in conservation, Vol. 41 (3), 1996.

¹⁶ Pearson (Colin), Deterioration of Ceramics, Glass and Stone. In Conservation of Marine Archaeological Objects, Butter Worth, London, 1987.

¹⁷ Porter (Venetia), Islamic Tiles, British Museum Press, 1999.

¹⁸ Rice (Prudence), Recent Ceramic analysis: 1. Function, style, and origins. Journal of Archaeological Research, (1996) -4.

¹⁹ Rhodes (Daniel), Clay and glazes for the potter, Chilton Book Company, Pennsylvania, London, 1996.

²⁰ The Conserve O Gram, Preservation of Low-Fired Ceramic Objects, series is published as a reference on collections management & curatorial issues. NPS Museum management program, Washington, September, 2002, Number 8/3.

²¹ Tykot (R.H.), Scientific methods and applications to archaeological provenance studies, Department of Anthropology, University of South Florida - Tampa, FL 33620, USA - Proceedings of the International School of Physics “Enrico Fermi”, Course CLIV, M. Martini, M. Milazzo and M. Piacentini (Eds.), IOS Press, Amsterdam 2004.

²² Zhang (Liying), Phase Equilibria in iron Phosphate System, A Dissertation Presented to the Faculty of the Graduate School of the Missouri University of Science and Technology, In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in Ceramic Engineering, 2010.

²³Hills (John), and others, Salt (NaCl) - SODIUM CHLORIDE, Article revised and updated by Erik Gregersen, 23 Aug., 2016, Retrieved from https://www.britannica.com.

²⁵ Tile Flooring Technical Information, © Copyright Wood Pro Inc. Box 363 421 Washington Street Auburn, MA - (508) 832-3291- design by Lifelong Marketing, Retrieved from http://www.woodproinc.com/Tile_technicalinfo.php.