Phd Degree / Doktora

Permanent URI for this collectionhttps://hdl.handle.net/11147/2869

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COAR Access Rights: search.filters.coarAccessRights.open accessSubject: search.filters.subject.Architecture--Conservation and restoration

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  • Doctoral Thesis
    Investigation of the Deterioration Problems of Excavated Andesite Monuments in Archaeological Sites for the Purpose of Conservation
    (Izmir Institute of Technology, 2015) Kaplan, Çağlayan Deniz; Böke, Hasan; Böke, Hasan
    Archaeological sites have to be preserved as the witnesses of the earliest human activities. Determination of deterioration processes of stone monuments in archaeological sites is one of the fundamental phases for their preservation. In this study, deterioration problems of excavated andesites from Aigai and Assos archaeological sites were investigated for the purpose of conservation. Within this intent, visual analysis of the andesite deteriorations was carried out with site surveys in four years intervals and basic physical, petrographic and microstructural properties, mineralogical, elemental and chemical compositions of interior parts and exterior surfaces of the andesites were determined and compared. Visual analyses at the sites show that the progress of andesite deterioration after excavation is insignificant during the four years. The experimental results indicated the slight chemical deterioration of the silica and ferromagnesian minerals and calcium-feldspars through the action of carbon dioxide and water during burial resulted in the formation of clay minerals and calcium carbonate and hematite patinas on the andesite surfaces respectively. Presence of clay minerals promotes physical, chemical and biological deterioration. The experimental results indicated that excavations can be carried out by preventive conservation measures to prevent further andesite deteriorations in open air conditions. As for the preventive conservation measures, the study suggests that the controlled drying of the andesites during excavations has to be supplied, clays on the stone surfaces have to be cleaned but but calcium carbonate layer have to be protected and biocides have to be implemented to prevent the biological formations. Site planning such as drainage to keep the water away from the monuments have to be supplied after their excavations.
  • Doctoral Thesis
    Reducing Risk in 'preservation Project Management': Re-Definition of the 'assessment Phase'
    (Izmir Institute of Technology, 2004) Özkut, Deniz; Eyüce, Ahmet
    The aim of this study is to redefine the pre-assessment phase as a sub-task that is 'pre-requisite' to the implementation and design phases of the preservation project, and to re-construct an effective project framework by emphasizing the role of the risks for the achievement of qualitative objectives. The main goal in constructing the scope of the project and the framework is to attain the synthesis of two different disciplines, namely management science and preservation.Cultural properties have significant 'values' such as having been preserved and transmitted to subsequent generations. Hence the cultural property keeps its originality; it is also required to provide for the preservation of all sorts of valuable architectural elements and values which are indicators of cultural characteristics and historical identity. When observed from a conceptual point of view, 'values' cause the divergences in the preservation process, which are named the pre-requisites in this dissertation.In regard to this dissertation, the preservation process differs from that of a In regard to this dissertation, the preservation process differs from that of a hand, and the legal requisites on the other. The seriously higher ratio of unexpected, unestimated, and unidentified input naturally entails indefiniteness in the preservation process. The most important parameter that shapes a preservation process appears to be 'risks' that consist of those indefinite input preventing the project from a proper definition of its context. The project components that debar scope definition in initial phases of the preservation process increase the risk margin in implementation process as well as intervention decisions and priorities.The Preservation Process is the preservation of the cultural property within an effective project system, which is aimed at attaining the total quality as a result of a synthesis of the technology, technique, and material originally deployed with those of the present. This preservation project, in addition, may be defined as a document that halts the deterioration, exterminates present structural deficiencies, and combines the study, research, evaluation, decision and implementation mechanisms needed to identify the intervention to be performed after research on and identification of the reasons for deterioration of the cultural property are completed.In order to achieve sound preservation, it is essential to obtain comprehensive, accurate, utilizable, and relevant information about the context in the pre-assessment phase, which takes place prior to the projecting phase of the preservation process.The pre-assessment phase is concerned with investigation, analysis, definition, understanding, and solution of the problems that will be the precise input of the priorities. The essential aim of pre-assessment phase is to differentiate the indefinite initial information about the risks in order to prevent the intervention priorities from causing any refractory consequences. Thus, prerequisites of the preservation project will be determinant in forming vertical correlation of project management tools.While approaches offered by the field of preservation occupy center stage in this dissertation, the project management will augment and support the main field.Management of the preservation projects will be in the end attainable for preservation of the cultural identity in a proper way by means of accurate decisions preservation of the cultural identity in a proper way by means of accurate decisions line with the preservation process has been attempted, the more the data of the preservation project will be re-organized and re-defined in order to analyze the risks by means of the utilization of the sub-tasks of Project Management. By means of redefinition of these components with respect to the preservation prerequisites, process of preservation project will be re-organized, as well as re-defined in order to reduce risks, within legal framework.The legal tools, which are the most influential in determining the main framework of the preservation process, are also influential in decision priorities and types of implementation of preservation work. It is primarily required to analyze all legal input including the laws and terms of reference upon which the process of preservation is dependent besides international laws, laws, regulations, by-laws of Higher Council for Preservation of Cultural Natural Entities, notes of the plans, and decisions of sites and groups by Preservation Councils, implementation principles and the unit price lists and material definitions. Those tools that have been classified as constituting the process that precedes the initiation of projecting process, projecting process, the process of approval, and implementation and postpostimplementation processes, have been discussed in terms of their respective impact upon preservation projects and challenges encountered.It is essential to achieve appropriate intervention decisions, priorities and methods of the preservation project with a process chart of pre-assessment phase besides the appropriate implementation depending on these decisions.There will be a main sentence in the chart as, "There may be some re-orientations in the preassessment phase whereas project management tools and preservation process are integrated in terms of defined flexibility".
  • Doctoral Thesis
    An Evaluation of Interventions in Architectural Conservation:new Exterior Additions To Historic Buildings
    (Izmir Institute of Technology, 2005) Yüceer, Hülya; İpekoğlu, Başak
    Due to the physical, functional and/or economic reasons, historical buildings require interventions while adapting them to the contemporary conditions. Although, national laws based on the international charters and congresses signed also by Turkey have determined the frame of these interventions, the approach of the architect is still one of the basic criteria directing the state of a building after restoration. Thus, together with the interpretation of architect the type of intervention varies.As needed today, interventions, a subject for one of the discussions in conservation, were applied by the past cultures when the consolidation, change in functions and enlargement of spaces was required for the important architectural property belonging to their own culture. Most of these historical buildings, which have to be protected according to the contemporary conditions, contain interventions due to restorations in several periods. These interventions are defined as the qualities to be evaluated and to be protected in the conservation process of the historic building. Thus, the contemporary intervention will also be respected as one of the qualities belonging to one of the periods of the building in later restorations. As the scope of interventions may vary from simple repair to reconstruction, it is necessary to limit the subject. In this study, new exterior additions to historic buildings are focused as major interventions to the historic buildings. What is aimed in this study is to determine the consistency of architectural expression in the preservation of original qualities, before and after interventions according to the principles of conservation. The aim is not to direct the architect for the type of intervention, but to derive the criteria which will form a base in his approach for the conservation of the historic building, through the evaluation of example buildings from İzmir. It is also expected that the evaluation of the examples in İzmir as subjects for several discussions held in the media, will offer a different attitude for these discussions.