Conservation and Restoration of Cultural Heritage / Kültür Varlıklarını Koruma ve Onarım
Permanent URI for this collectionhttps://hdl.handle.net/11147/23
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Article Citation - Scopus: 5Mimari Fotogrametri Alanındaki Çağdaş Gelişimlerin Değerlendirilmesi(Gazi Üniversitesi, 2004) Turan, MineSayısal (dijital) veya analog (fotoğrafik) görüntüler üzerindeki bilgilerin, mimari nesnelerin ölçekli görsel belgelerinin elde edilmesinde kullanılmak üzere değerlendirilmesi tekniklerinin bütününe mimari fotogrametri denilmektedir. Tarihi uygulamalarda genellikle ayrıntılı cephe çizimleri ile belgeleme sonuçları sunulurken, çağdaş olanaklar, koruma uzmanı mimarın gereksinim duyduğu çözümleyici görselleştirmelerin sunumuna da olanak vermiştir. Artık fotogrametri ile belgelenen tarihi binalar; bilgisayar ortamında hazırlanan üç boyutlu modelleri, çeşitli perspektifleri ve tematik bilgilerin döküldüğü ayrıntılı haritaları ile incelenebilmektedirler. Etkileşimsel çoklu ortamda gerçekleştirilen sunumlar da yapılabilmektedir. Bu sunumlara olanak veren yüksek geometrik hassasiyetteki filmli ve dijital fotoğraf makineleri, yüksek çözünürlükteki tarayıcılar ve görüntü değerlendirme yazılımları hızla geliştirilmektedir. Diğer yandan fotogrametrinin temel ilkeleri yeniden yorumlanarak yöntem kurguları çeşitlenmektedir. Tüm bu çağdaş gelişimlerin mimari koruma alanındaki yeri, derlenen kaynaklar yorumlanarak bu yazı kapsamında vurgulanmıştır.Article Kent İçi Arkeolojik Alanlarda Katmanlaşmanın Analizi ve Koruma Sorunları: Foça Örneği(Türk Tarih Kurumu, 2018) Taşcı, Burcu; Akyüz Levi, EtiFoça Batı Anadolu’da Prehistorik dönemden başlayarak Arkaik, Klasik, Helenistik, Roma, Bizans, Ceneviz kolonisi ve Osmanlı dönemlerinde sürekli iskân görmüş, çok katmanlı bir yerleşimdir. Kentte arkeolojik kazı çalışmaları 20. yüzyıl başından günümüze aralıklarla devam etmektedir. Üçüncü dönem kazı çalışmaları Prof. Dr. Ömer Özyiğit başkanlığında 1989 yılından beri sürmektedir. Modern Foça kenti, tarihi yaklaşık M.Ö. 3000’lere dek uzanan antik Phokaia kentinin üstünde bir katman olarak bulunmakta ve kazı çalışmaları da kent içi arkeolojik alanlarda yoğunlaşmaktadır. Kentin tarihi katmanlaşmasında en üst tabaka olarak Osmanlı dönemi sivil mimarlık örnekleri öne çıkmaktadır. Bununla birlikte modern kent dokusunu az katlı, niteliksiz betonarme yapılar oluşturmaktadır. Kentte ilk sit kararlarının belirlendiği 1977 yılından günümüze dek sit sınırları pek çok kez değişmiş ve bu durum yeni yapılaşmanın önünü açmıştır. Özellikle turizmin ve ikincil konut yapımının artması ise kültür varlıklarına zarar vermiştir. Bu olumsuz durum kent içi arkeolojik alanlarda katmanlaşmanın zarar görmemesi için farklı yaklaşımlara gereksinim duyulduğunu göstermektedir. Kentsel arkeoloji çalışmaları bu gereksinime yanıt verecek nitelikte olup, kapsamlı tarih araştırmaları ile desteklenen kazı çalışmalarında ortaya çıkan verilerin, kentlerin koruma, planlama ve gelişim süreçlerine eklenmesini öngörmektedir.Article Citation - WoS: 6Citation - Scopus: 3Anadolu’da Roma Dönemi Yapı Tuğlalarının Özellikleri(Gazi Üniversitesi, 2017) Uğurlu Sağın, ElifIn this study, chemical and mineralogical compositions, physical, microstructural and pozzolanic properties of Roman Period building bricks taken from Kizil Avlu (Serapeum) in Pergamon and from several different buildings from ancient sites of Aigai and Nysa were determined by using XRF, XRD, FTIR, SEM-EDS and chemical analyses. Chemical compositions of bricks were evaluted by statistical analyses in order to identify whether or not these bricks were manufactured by using same natural raw material sources. Analyses results indicated that Roman period building bricks were manufactured by using calcium rich clay sources and fired at low temperatures (<900°C). Brick samples were mainly composed of quartz, albite, anorthite, muscovite and hematite. Statistically significant differences found in their chemical compositions revealed that local raw material sources were selected for the manufacturing of historic brick samples belonging to different cities.Article Citation - WoS: 5Citation - Scopus: 2The Masonry Techniques of a Historical Bridge in Hypokremnos (i̇çmeler)(Middle East Technical University, 2017) Uygun Gençer, Funda; Turan, MineThis study focuses on characteristics of a historical bridge in Içmeler, Urla, Izmir. Urla, a historical settlement on the west of Izmir, has been part of a commercial network between Karaburun, çesme and Anatolia throughout history. The aim is to understand the construction technique and material usage in Hypokremnos Bridge and identify a possible sequence of the original construction. The linear bridge was constructed by using masonry technique. It has three openings with various sizes and supported with rounded arches. The bridge wall is crowned with a road way making a crest at its center a inclined façade. This study is composed of four phases; documentation, analysis of construction technique and material usage, historical evaluation and restitution. In the first phase, by using Tgi3D Su Photoscan 2.13 and Trimble SketchUp 2013 software, three dimensional model was prepared. Visual analysis of construction technique and material usage was carried out and the mortar sample from the bridge was investigated in the conservation laboratory in the second phase. Three dimensional manual photogrammetric documentation of the historical bridge has provided the advantage of conceiving many constructional details. This condensed observation of constructional features supported with comparative study on historical bridges in Anatolia has revealed that the elements and composition of the studied bridge presents Roman characteristics, but the masonry techniques used recall those of Turkish period. The detailed data about structural system gathered from different locations of the bridge was used for the production of reconstitution of system detail. Reconstitution model of the bridge was produced by using reconstitution of system detail. To identify construction phases of the bridge, literature survey was carried out. According to structural elements and composition of the bridge, it is thought to be constructred in Roman Period, however, both the randomness in the composition of the rough cut lime stones used in the outer shells of the bridge wall, and lack of system in the form and color composition of the cut sand stones in the arches and the sea façade may be interpreted as an end result of a comprehensive repair on total reconstruction in the Turkish period.Conference Object Three Dimensional Modeling Via Photographs for Documentation of a Village Bath(Copernicus GmbH, 2013) Balta, H. B.; Turan, Mine; Ocali, O.The aim of this study is supporting the conceptual discussions of architectural restoration with three dimensional modeling of monuments based on photogrammetric survey. In this study, a 16th century village bath in Ulamiş, Seferihisar, and Izmir is modeled for documentation. Ulamiş is one of the historical villages within which Turkish population first settled in the region of Seferihisar - Urla. The methodology was tested on an antique monument; a bath with a cubical form. Within the limits of this study, only the exterior of the bath was modeled. The presentation scale for the bath was determined as 1 / 50, considering the necessities of designing structural interventions and architectural ones within the scope of a restoration project. The three dimensional model produced is a realistic document presenting the present situation of the ruin. Traditional plan, elevation and perspective drawings may be produced from the model, in addition to the realistic textured renderings and wireframe representations. The model developed in this study provides opportunity for presenting photorealistic details of historical morphologies in scale. Compared to conventional drawings, the renders based on the 3d models provide an opportunity for conceiving architectural details such as color, material and texture. From these documents, relatively more detailed restitution hypothesis can be developed and intervention decisions can be taken. Finally, the principles derived from the case study can be used for 3d documentation of historical structures with irregular surfaces.Article Citation - WoS: 2Citation - Scopus: 1Primary Schools of İzmir (1923-1950)(Middle East Technical University, 2012) Kul, Fatma NurşenThis study aims to identify primary school buildings constructed inIzmir between the years 1923 and 1950 and understand them withinthe national context and its reflection on the local. For this purpose, thenational primary education system and school construction policies wereresearched, and their local reflections were discussed through the specificcase of Izmir. The results of this research demonstrate that the national policies,instigating the extension of school buildings throughout the country, weresuccessfully implemented in Izmir, and contrary to numerous other cities,new school buildings were constructed homogenously not only in thecity and sub-province centers but also in the villages. This meant that, awide spectrum of schools differing in their scales and qualities, rangingfrom multi-spaced city and sub-province schools built in highly populatedareas to single-spaced village schools constructed in settlements of lowpopulation levels were built in Izmir. Detailed archival research, sitesurveys and literature reviews showed that 500 new primary schools werebuilt in 1923-1950, 99 of which provided information in more detail in theform of visual and written documents. Based on this data, it was possible toestablish the type of projects that were implemented in Izmir, the designingpersons or institutions, their design criteria and the school constructionprocessesArticle Citation - WoS: 8Citation - Scopus: 8Reducing Marble-So2 Reaction Rate by the Application of Certain Surfactants(Springer Verlag, 2003) Böke, Hasan; Gauri, K. LalSulfur dioxide (SO2), prevalent in the modern urban environment of industrial countries, attacks calcite (CaCO3) in marble. As a result, a gypsum (CaSO4.2H2O) crust is produced at rain-sheltered surfaces while areas exposed to rain experience accelerated erosion. We have investigated the effect of certain surfactants as protective agents against SO2 attack. We report that the anions oxalate (C2O4-2) and oleate (C17H33COO-) from solutions of their highly soluble alkali salt species are able to replace carbonate (CO3-2) in calcite producing less reactive substrate of oxalate and oleate of calcium. Experiments to measure the protection obtained by these treatments were carried out in the laboratory and field conditions at nearly 1 ppm and 10 ppb SO2 concentrations, respectively. We found that these treatments provided significant protection to marble exposed in sheltered areas, up to 30% reduction of reaction rate by treatment with 2 × 10-4 M sodium oleate and up to 14% by a 2 × 10-3 M with potassium oxalate solutions, but become ineffective over long term exposure when applied to surfaces exposed to rain. Carrara marble was used in the reported study. Ion chromatography was the analytical tool, which allowed precise measurements of ionic concentrations of these salts, the amount of their uptake by marble, and the thickness of the gypsum crust. X-ray diffraction allowed determination of the new minerals formed at the marble surface by the treatment with surfactants.