A RESEARCH ABOUT CHARACTERIZATION OF LIME MORTARS USED IN THE EARLY BYZANTINE PERIOD IN THE LAND WALLS OF CONSTANTINOPLE, YEDIKULE

Year 2010, Issue: 5, 31 - 39, 01.12.2010

Seden Acun Özgünler Ahmet Ersen Ahmet Güleç

Abstract

The present paper deals with the scientific research related to the characterization of the Land Walls of Yedikule- Istanbul Constantinople . For characterization purposes simple chemical analysis and petrographic analysis can be adequate, also certain information for the deterioration process can be derived from the aforementioned tests. However, for understanding the ancient production techniques, promenance of the materials and the complicated deterioration processes further scientific research based on instrumental analyses such as DTA, ICP, X-Ray Diffraction, SEM-EDX and Mercury Intrusion tests were conducted. By the results of the tests, the binder and aggregate types and ratios of the mortars were determined. Further more, the physical and mechanical properties and water soluble salt contents of the mortar samples were investigated. It was determined that the brick pieces, limestone particles and river sand were used as aggregate in these lime mortar samples. And, the deterioration causes are water soluble salts originating from sea spray and polluted air.

Yedikule Kara Surları’nda Kullanılan Erken Bizans Dönemi Harçlarının Karakterizasyonu Üzerine Bir Araştırma

Abstract

References

• Ahunbay, Z., Ahunbay, M., Ersen, A., Gürdal, E., Acun, S., Güleç, A., 2003, ‘Research on the Characterization and De- terioration of the Stones, the Bricks and the Khorasan Mortars of the Tower 4 (T4) of the Land Walls of Istanbul (Cons- tantinople)’, Unpublished Fortmed Project Report submitted to project manager in Venice, EC Project no: ICA 3-CT-1999-00.
• Güleç, A., Ersen, A., 1998, ‘Characterization of Ancient Mortars: Evaluation of Simple and Sophisticated Methods’
• Journal of Architectural Conservation, Vol.4, No.1, March, pp.56-67. Güleç, A., Tulun, T., 1997, ‘Physico-Chemical and Petrographical Studies of Old Mortars and Plasters of Anatolia’, Ce- ment and Concrete Research, Vol.27, pp.227-229.
• Güleç, A., 1990, ‘Characterization of Mortars and Plasters of Some Historic Monuments, Part II’, NATO, CCMS Plot
• Study, Conservation of Historic Brick Structures, 4th Expert Meeting Proceedings Book, Amersfoort, 25-27 October 1990, pp.121
• Moropoulou, A., Bakolas, A., Moundoulas, P., 2000, ‘Criteria and Methodology for Restoration Mortars Compatib- le to the Historic Materials and Structures’, Proceedings of the 9th International Congress on Deterioration and Conservation of Stone, 24 June 2000, Venice, pp.403-411.
• Charola, A.E., Dupas, M., Shery, R.P., Freund, G.G., 1984, ‘Characterization of Ancient Mortars, Chemical and Instru- mental Methods’, Proceedings of the International Symposium on Scientific Methodologies Applied to Works of Art, Florence.
• TS 699, 1987, Standard Test Methods for Natural Stones, Türk Standartları Enstitüsü, Ankara.
• ASTM C 50, 1999, Standard Practice for Sampling, Sample Preparation, Packaging and Marking of Lime and Limestone Products, Ame- rican Standards.
• Borelli, E., 1999, ARC Laboratory Handbook, Conservation of Architectural Heritage, Historic Structures and Materials, ICCROM, Rome.
• Güleç, A., Acun, S., Ersen, A., Gürdal, E., 2003, ‘Evaluation of Konya Region Volcanic Tuff as a Pozzolanic Additive in
• Conservation Mortar’, International Symposium on Industrial Minerals and Building Stones (IMBS), Istanbul, Turkey.