Study of Architectural Ceramics of the Qal’a of Bani Hammad

  • Abla Brahmi Materials, Processes and Environment Research Unit (MPE-RU), city Frantz Fanon 35000 Boumerdes, Algeria
  • Messaoud Hamiane Materials, Processes and Environment Research Unit (MPE-RU), city Frantz Fanon 35000 Boumerdes, Algeria
DOI: https://doi.org/10.34118/jbms.v5i1.55
Keywords: The Qal’a of Bani Hammad, physicochemical characterization of ceramics, optical absorption spectrometry, X-ray fluorescence, X-ray diffraction

Abstract

In order to define with precision, the physicochemical characteristics of the architectural ceramic exhumed from the Qal’a of Bani Hammad’s site (inscribed on the UNESCO’s World Heritage List in 1980), our study was conducted on a set of ceramics. The first analyses were focused on the color of the glazes, by optical absorption spectrophotometry (also called optical absorbance spectroscopy), on the texture by X-Ray diffraction, and on the elemental composition of the various constituent stages of these glazes and their terra cotta, by scanning electron microscopy and X-Ray fluorescence. Indeed, the study combining optical absorbance spectroscopy and X-Ray fluorescence enabled us to determine the origin of the monochromic green coloring of the glazes in some samples. This coloring can be attributed to the presence of the Cu2 chemical element; but these glazes darkened due to the high iron content they contain. This could be explained by an intentional addition of iron, in tin-opacified leaded glazes, baked in an oxidizing atmosphere and put on a limestone-rich marlacious paste.

The chemical and mineralogical analyses of all shards show that their paste is calcareous. This dataset will be exploitable for re-creation experiments. It also represents a first exploitable referential system, for potential comparisons with other samples belonging to other Algerian sites and different periods of time.

References

Aissani, D. & Amara, A. (2014). Qalʽa des Bani Ḥammād : première capitale du royaume berbère des Hammadides (XIe siècle), 97547_Enc_Berbere_05.ind.

Daoulatli, A. (1978). La céramique Ifriqiyenne du IXe au XVe siècle. Colloques Internationaux du C.N.R.S N°584--La céramique médiévale en méditerranée occidentale Xe-XVe siècles, Valbonne 11-14 septembre 1978, édition du C.N.R.S Paris, 1980, p 197- 201.

Golvin L. (1978). Les céramiques émaillées de période hammâdide Qal'a des Banû Hammâd (Algérie). Colloques Internationaux du C.N.R.S N°584-La céramique médiévale en méditerranée occidentale Xe-XVe siècles, Valbonne 11-14 septembre 1978, édition du C.N.R.S Paris, 1980, p 203.

Maniatis, Y., Simopoulos, A., Kostikas, A. & Perdikatsis, V. (1983). Effect of reducing atmosphere on minerals and iron oxides developed in fired clays: the role of Ca, in Journal of the American ceramic Society, 66, 11, 1983, p. 773- 781.

Marçais, G. (1913). Les Poteries et Faïences de la Qal’aa des Beni Hammad XIe siècle ;Contribution à l’étude de la Céramique Musulmane, Constantine 1913. pp 4- 17.

Mason. R (1997). M.S. Tite - The beginnings of tin-opacification of pottery glazes, in Archaeometry, 39, 1, 1997, p. 41-58.

Munier. P (1957). Technologie des faïences, M.P.de Groote, France, 1957, p 25-209.

Picon, M. (1973). Introduction à l’étude des céramiques sigillées de Louzoux, Publié par Dessain et Tolra, Paris, 1973, P 16-73.

Rhodes, D. (1976). La Poterie, Terres et Glaçures : Les techniques de l'émaillage, Dessain et Tolra Paris, p 43-175.

Richard, S. (2000). Etude physique des Carreaux glaçurés du palais des Beys Alger XVIIe- XVIIIe siècle, sur la nécessité de connaître la texture et la nature des constituants (terre cuite, glaçure et décors en vue de recréations, mémoire de D.E.A de l’Université de Michel de Montaigne- Bordeaux 3, p16-106.

Published
2018-06-04
How to Cite
Brahmi, A., & Hamiane, M. (2018). Study of Architectural Ceramics of the Qal’a of Bani Hammad. Journal of Building Materials and Structures, 5(1), 164-173. https://doi.org/10.34118/jbms.v5i1.55
Issue
Vol 5 No 1 (2018)
Section
Original Articles

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