Stone deterioratins in Mardin Madrasas: The case of Şehidiye and Kasımiye Madrasas

Abstract

Stone is a widely used building material in cultural heritage buildings due to its petrographic properties. However, changes occur on the stone surfaces of the buildings due to exposure to environmental and climatic factors. Therefore, it is of great importance to detect these changes and take measures for the long-term preservation of these structures. The aim of this study is to identify and classify the stone changes observed in Şehidiye and Kasımiye madrasahs in Mardin. In addition, the similarities and differences of the changes and the causes of the changes will be determined. The study includes the identification and classification of stone alterations based on a general literature review, visual inspection of the alterations and mapping methodology. Observed changes were identified through visual inspection, categorized as physical, chemical, biological or anthropogenic, and photographed for documentation. A mapping method was used to determine the extent of change, which involved calculating the ratio of observed changes to total façade area. The changes on each façade were then analyzed to determine their causes. The impact of the same changes on the various structures and their proportions in relation to the façade were compared.