Archaeometric investigations of stone deterioration in Kalecik (Ankara) Castle

---

Tezin Türü: Yüksek Lisans

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2012

Öğrenci: ALP OSMAN AKOĞLU

Danışman: TAMER TOPAL

Özet:

Kalecik Castle is an important historical building. However, dacitic building stone sed is deteriorating mainly because of atmospheric conditions. The purpose of this tudy is to understand the deterioration mechanisms affecting the dacitic stones used n the castle’s walls. To achieve this purpose various arhaeometrical methods such as etrography, X-ray diffraction analyses, analyses for determining physical poperties density, porosity, and water absorption capacities), ultrasonic velocity easurements and some mechanical tests are used. The results of this study show that the deterioration of Kalecik Castle results mostly rom physical factors such as frost action, wetting and drying and thermal shock. According to the study, chemical and biological factors that may also be an mportant cause of deterioration are negligible in Kalecik Castle’s building stones.