Conservation and Restoration of Cultural Heritage / Kültür Varlıklarını Koruma ve Onarım
Permanent URI for this collectionhttps://hdl.handle.net/11147/23
Browse
5 results
Search Results
Article Citation - WoS: 6Citation - Scopus: 4Conservation-Aimed Evaluation of a Historical Aqueduct in Izmir(American Society of Civil Engineers (ASCE), 2019) Mamaklı, Fatma Sezgi; Turan, Mine; Aktaş, Engin; Vardaroğlu, MustafaThe seventeenth century was the era in which Izmir became an international commercial center in the eastern Mediterranean. The vizier of the era, Koprulu Fazil Ahmet Pasa, noticed the scarcity of potable water in relation with the increasing population at the center of this harbor city and ordered the construction of an aqueduct on Melez Valley. The Veziraga Aqueduct was constructed in 1674. This article aims to identify historical, architectural, and structural characteristics of the Veziraga Aqueduct so that its heritage values and conservations problems can be understood. The geographical and historical characteristics of the Veziraga Aqueduct are described by taking the effects of site and the sociocultural situation of city into consideration. The architectural characteristics of the aqueduct are prepared by using the site survey data to reveal the current condition and find out the original state. Seismic behavior of the aqueduct is investigated by using two approaches: analytical equivalent static analysis and finite-element analysis. The historical, architectural, and structural characteristics of the Veziraga Aqueduct prove its historical, documentary, and aesthetic values.Article Citation - WoS: 28Citation - Scopus: 29Characteristics of Bricks Used in the Domes of Some Historic Bath Buildings(Elsevier Ltd., 2013) Uğurlu Sağın, Elif; Böke, HasanIn this study, characteristics of bricks used in the domes of some historic bath buildings dated to 15th century in Izmir were determined in order to indicate the properties of repair bricks that will be used in the conservation works of the domes. For this purpose, their basic physical properties, elemental and mineralogical compositions, firing temperatures and microstructural properties were determined by using XRF, XRD, SEM-EDS and TGA analysis. Analysis results indicated that the bricks are of low density, high porosity and were produced from raw materials containing low amounts of calcium poor clays fired at low temperatures (<. 900. °C). They are mainly consisted of small pores with r<. 5. μm that make the bricks more susceptible to salt crystallization and freeze-thaw cycles. Although the bricks were fired at low temperatures and susceptible to salt crystallization and freeze thaw cycles, the structural systems of the domes remained without losing their integrity due to the moderate climatic conditions of Izmir. Repair bricks that will be used in the conservation works of the domes should be compatible with the original ones and produced from calcium poor clays by firing at low temperatures.Article Citation - WoS: 9Citation - Scopus: 9Impact of Transparency in the Design of Protective Structures for Conservation of Archaeological Remains(Elsevier Ltd., 2013) Yaka Çetin, Funda; İpekoğlu, BaşakProtective structures are advantageous to extend the life of exposed remains and to display objects of cultural significance. A considerable number of shelters and enclosures have been constructed of transparent materials to enhance the display function. This study aims to examine the utilization of transparency in design of protective structures in terms of advantages and disadvantages. To fulfill this aim, a group of protective structures, which were completely transparent or with transparent façades, such as the Roman Villa at Piazza Armerina, Sicily (Italy), the Fishbourne Roman Palace at West Sussex (England), the Roman Bath at Badenweiler (Germany), the Cathedral ruins at Hamar (Norway) and the Terrace Houses 2 at Ephesus (Turkey) were investigated in terms of their effect on preservation and display of remains. The selected examples illustrated that greenhouse effect, condensation, loss of transparency and excessive lighting are the problems to be considered in the design process. As a result, transparent materials used in protective structures should be selected carefully according to their thermo-physical properties such as solar, thermal and light transmission in order to reduce the negative effects of overheating and condensation.Article Citation - WoS: 10Citation - Scopus: 12Weathering of Andesite Monuments in Archaeological Sites(Elsevier Ltd., 2013) Kaplan, Çaglayan Deniz; Mürtezaoğlu, Fulya; İpekoğlu, Başak; Böke, HasanArchaeological sites, which are the integral parts of cultural heritage, have to be conserved as a whole to have a variety of information about past societies. In this study, the weathering problems of unburied and newly excavated andesite monuments in Aigai archaeological site (Manisa, Turkey) were investigated for the purpose of their conservation. With this intent, the basic physical properties, mineralogical and chemical compositions and microstructural properties of sound and weathered samples were determined by using XRD, SEM-EDS, FT-IR and TGA analysis. Results of the study indicated that the weathering mechanisms of unburied and post-excavated andesite differ from each other. The main weathering problems observed on the unburied stones are mainly increasing microcracks from inner parts to the surfaces, deposition of iron oxides and microbiological colonization due to climatic conditions of the site. In the newly excavated areas, calcium carbonate deposition, accumulation of clay minerals and microbiological colonization are the main weathering problems due to weathering of silica minerals through the action of carbon dioxide and water during burial.Article Citation - WoS: 62Citation - Scopus: 60Properties of Roman Bricks and Mortars Used in Serapis Temple in the City of Pergamon(Elsevier Ltd., 2009) Böke, Hasan; Özkaya, Özlem AslanSerapis temple, which was constructed in the Roman period in the city of Pergamon (Bergama/Turkey), is one of the most important monuments of the world heritage. In this study, the characteristics of bricks and mortars used in the temple have been determined in order to define the necessary characteristics of the intervention materials, which will be used in the conservation works of the temple. Several analyses were carried out to determine their basic physical properties, raw material compositions, mineralogical and microstructural properties using X-ray diffraction, Scanning Electron Microscope and a Thermo Gravimetric Analyzer. Analysis results indicated that the mortars are stiff, compact and hydraulic due to the use of natural pozzolanic aggregates. The Roman bricks are of low density, high porosity and were produced from raw materials containing calcium poor clays fired at low temperatures.