Akademik Veri Yönetim Sistemi
Current Approaches, Solutions and Practices in Conservation of Cultural Heritage, Gulder Emre,Ayberk Yilmaz,Paola Pogliani,Gulce Ogruc Ildiz,Rui Fausto, Editör, Istanbul University Press, İstanbul, ss.243-262, 2024
The thermal imaging method, which is a non-destructive diagnostic method for the investigation of historical
stone structures, measures the heat dissipation of the materials examined and creates colored heat maps for analysis
of the data. The method allows to evaluate the deterioration state of the structures, gathering information about their
current preservation state and allowing to predict in advance sensitive areas of the structures where deterioration
may arise in the future. Since there are differences in the heat transfer of original limestone materials, and repair
mortars or imitations, the regions where dirt deposits form in the different materials and deformations of their
surfaces are also different. The thermographic analyses (in particular, thermal mapping) thus allow to evaluate
deterioration in the materials and help determining the factors that cause the deterioration of the structure, providing
relevant data for the design of an effective conservation planning for the structures and helping the protection-repair
works. This study applies the thermographic method to the evaluation of the deterioration state of the Faculty of
Letters of the Istanbul University South external facade, with was built under the influence of the Second National
Architecture movement and investigated by Architects Sedat Hakkı Eldem and Emin Onat. The factors causing deterioration in the structure were also investigated by visual examination, soluble salt tests, moisture analysis and
conductivity measurements, the results obtained with all methods being compared. The present study is also a
contribution for the identification and evaluation the possible deterioration factors acting on historical stone
structures in general.
Keywords: Thermographic investigations, historical stone structures, deterioration evaluation, Istanbul
University Faculty of Letters