Evaluation of The Materials of A Historical Building in Terms of Restoration: The Case of Ankara Kaleci̇k Castle

Year 2025, Volume: 14 Issue: 2, 999 - 1023, 30.06.2025

Ali Emirosmanoğlu , Ahmet Gökdemir

https://doi.org/10.17798/bitlisfen.1635194

Abstract

Transferring the historical accumulation of a society to future generations is of great importance for the continuity and identity of that society. Kalecik Castle, built in 200 BC, has witnessed many civilizations since the Galatians period. The protection of historical buildings, which serve as a bridge from the past to the future, can be ensured by appropriate technique and material choices. In this study, the selection of appropriate materials and techniques in the restoration of historical buildings is discussed in the case of Ankara Kalecik Castle. Studies were carried out with samples taken from 4 facades of the castle (north, south, east, west). Physical tests and electron microscope analyzes (SEM and EDS) were performed on the samples taken from the castle. As a result of these analyzes, compressive strength, porosity, water absorption, density and unit volume weight values of the materials used in the structure were obtained. As a result of the EDS analysis, it was observed that the percentages of silicon-dominant elements on the north and south facades and calcium-dominant elements on the west and east facades were prominent. As a result of SEM analysis, it was determined that the particles exhibited a homogeneous distribution. In terms of compressive strength, the highest value was measured on the east facade and the lowest on the north facade. The results of other physical tests showed that the values of the four facades were close to each other. In the light of the data obtained from the samples, the castle was modeled with SAP 2000 program and the static condition of the structure was evaluated. As a result of numerical modeling and analysis, it was determined that the structure was stable under dead loads and it was predicted that the structure could be damaged under live loads.

Keywords

Ankara Kalecik Castle , Material , Restoration , Physical experiments , Numerical analysis.

Ethical Statement

The study is complied with research and publication ethics.

Thanks

Samples were taken without damaging the structure. Permission was received from the Ministry of Culture and Tourism to take samples. We thank the Ministry of Culture and Tourism.

References

• P. Usta, Ö. Bozdağ, & A.I. Çarhoğlu, “Appraisal of structural behavior of Afyon Sandıklı Ulu Mosque”. El-Cezeri, 2020, 7(2), 871-881. https://doi.org/10.31202/ecjse.710887
• P. Usta, & Ö. Bozdağ, “A new approximate method for earthquake behaviour of worship buildings”. Civil Engineering Journal-Tehran, 2019, 5(12). 10.28991/cej-2019-03091440
• S. Tanriverdi, “An experimental and numerical study of the strengthening of masonry brick vaults”. In Structures, 2023,47, 800-813. https://doi.org/10.1016/j.istruc.2022.11.098
• B. Feilden, Conservation of historic buildings. London: Routledge, 2007.
• G. D. Gann, T. McDonald, B. Walder, J. Aronson, C. R. Nelson, J. Jonson, “International principles and standards for the practice of ecological restoration,” Restoration ecology, 2019, 27(S1), 1-46. https://doi.org/10.1111/rec.13035
• A. Noble, Traditional Buildings. London: I.B. Tauris, 2009.
• A. Ural, & T. Celik, “Dynamic analyses and seismic behavior of masonry minarets with single balcony”. Aksaray University Journal of Science and Engineering, 2018, 2(1), 13-27. https://doi.org/10.29002/asujse.371344
• A. E. Krauklis, C. W. Karl, A. I. Gagani, & J. K. Jørgensen, “Composite material recycling technology state-of-the-art and sustainable development for the 2020s.” Journal of Composites Science, 2021, 5(1), 28. https://doi.org/10.3390/jcs5010028
• A. Gökdemir, Y. Kopraman, A. Özdemir, R. Bülbül, and M.F. Ilgin. “Akşehir Gazi Mustafa Kemal İlkokulu Binasi (Papaz Evi) Yapi Malzeme Analizi İle Restorasyon Önerisi.” International Korkut Ata Scientific Researches Conference Osmaniye, Türkiye, June 28-30, 2022, pp. 350-355.
• H. Özdemir, “Tarihi yapıların bilgisayar destekli analizi: Patara antik kent tiyatrosu sahne yapısı örneği.” Yüksek Lisans Tezi: Akdeniz Üniversitesi Fen Bilimleri Enstitüsü, 2018, Antalya.
• Y. Akyürek, “Yeniden İşlevlendirilen Tarihi Yapıların İç Mekânsal Tasarımlarının Müze Örnekleri Üzerinden Değerlendirilmesi.” Yüksek Lisans Tezi: Kapadokya Üniversitesi, Lisansüstü Eğitim, Öğretim ve Araştırma Enstitüsü, 2022, Nevşehir.
• S. Kurugöl, and A. Güleç, “Physico-chemical, petrographic, and mechanical characteristics of lime mortars in historic Yoros Castle (Turkey).” International Journal of Architectural Heritage, 2012, 6(3), 322-341. https://doi.org/10.1080/15583058.2010.540072
• B. Jonaitis, V. Antonovič, A. Šneideris, R. Boris, and R. Zavalis, “Analysis of physical and mechanical properties of the mortar in the historic retaining wall of the Gediminas Castle Hill (Vilnius, Lithuania).” Materials, 2018, 12(1), 8. https://doi.org/10.3390/ma12010008
• K. Dereje, “Mechanistic behavior of historical masonry assemblages of fasil ghenbe and structural response assessment of mentwab castle under vertical loading; A case study.” Doctoral dissertation: Addıs Ababa Unıversıty, 2018, Addıs Ababa.
• M.E. Stavroulaki, G.A. Drosopoulos, E. Tavlopoulou, N. Skoutelis, and G.E. Stavroulakis, “Investigation of the structural behaviour of a masonry castle by considering the actual damage.” International Journal of Masonry Research and Innovation, 2018, 3(1), 1- 33. https://doi.org/10.1504/IJMRI.2018.089046
• A. Gökdemir, and T. Yatkin, “Pre-restoratıon materıals research ın hıstorıcal Ankara Castle.” Romanian Journal of Materials/Revista Romana de Materiale, 2021, 51(2), 19- 27.
• A. Fırat, Evaluation of structural problems of Geben Castle and recommendations for structural solution. Yüksek Lisans Tezi: Hasan Kalyoncu Üniversitesi Fen Bilimleri Enstitüsü, 2020, Gaziantep.
• E. Belovacıklı, “Tarihi kalelerin sonlu elemanlar yöntemi kullanılarak analiz edilmesi.” Yüksek Lisans Tezi: Konya Teknik Üniversitesi Fen Bilimleri Enstitüsü, 2022, Konya.
• A.O. Akaoğlu, “Archaeometric investigations of stone deterioration in Kalecik (Ankara) Castle” Yüksek Lisans Tezi: Orta Doğu Teknik Üniversitesi, 2012, Ankara.