Conservation and Restoration of Cultural Heritage / Kültür Varlıklarını Koruma ve Onarım

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Citation - WoS: 93
Citation - Scopus: 111
The Accelerating Effects of the Microorganisms on Biodeterioration of Stone Monuments Under Air Pollution and Continental-Cold Climatic Conditions in Erzurum, Turkey
(Elsevier Ltd., 2006-07) Nuhoğlu, Yaşar; Ensar, Oğuz; Uslu, Hakan; Özbek, Ahmet; İpekoğlu, Başak; Ocak, İjlal; Hasenekoğlu, İsmet; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
The aim of this research was to determine the accelerating effects of microorganisms on the biodeterioration of stone under air pollution and continental-cold climatic region in Erzurum, Turkey. Studies have been carried out on specimens of the Rustempasa Bazaar, the Lalapasa Mosque, the Erzurum Castle Mosque, the Double Minarets-Madrasah, the Great Mosque and the Haji Mehmet Fountain aged from 441 to 823 years old. The results showed that vegetative and reproductive (generative) forms of the microorganisms could develop during the winter months when the night time average temperature was even - 25 °C. Also the reproductive forms had developed and the whole stone surface was covered with a biofilm caused by the microorganisms. Silicon, aluminum, calcium, potassium, titanium, magnesium, zinc, sulfur, iron, sodium, and niobium were found in the stones of the historical buildings with varying amounts through the SEM-EDS analysis. Some of these elements could be used as an energy resource for the microorganisms together with the air pollutants such as sulfur dioxide, nitrogen oxides and particles on the stone surfaces. Of 21 isolates, 15 species from 6 bacterium genera and 5 species from 5 fungi genera plus 1 fungi genera were identified on the deteriorated stone surfaces even during the coldest months by microbial identification system (MIS) and these findings were tested by SEM investigations.
Citation - WoS: 57
Citation - Scopus: 65
An Architectural Evaluation Method for Conservation of Traditional Dwellings
(Elsevier Ltd., 2006-03) İpekoğlu, Başak; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Historic urban sites and traditional houses are the most important evidence of the past life style. The conservation of these traditional values in the context of conservation and revitalization of architectural heritage is in a sense the preservation of culture. The main goal of conservation is to enliven cultural properties by evaluating their architectural, historical, environmental, visual and aesthetic characteristics. These evaluation studies, which are essential in the context of conservation plans, are inevitable phases to determine the principles of the plans. This study is aimed to propose a method for the architectural evaluation phase, which is essential before conservation decisions. The proposed method is based on a gradation system. Odunpazari district in Eskişehir/Turkey is determined as the area to test this gradation method. It is proposed that this method explains the systematic way for evaluating architectural features belonging to historic sites whose conservation plans are to be prepared. In the study, traditional buildings are evaluated from the point of their exterior and interior architectural characteristics and classified as different value groups: A, B, C and D. This grouping will be advantageous to conservation decisions. Different technical teams may be organized to be responsible for these various value groups. As a result, a systematic approach for the determination of specialized teams and required equipment will be achieved. Thus, an accurate determination of required time and cost estimates will be realized.
Art and Construction Related Qualities of 14th‒15th Century Monuments in a Rural Landscape on the Western Coast of Türkiye
(KeAi Communications Co., 2024) Hamamcıoğlu Turan, Mine; Aktaş, Engin; Toköz, Özge Deniz; 02.02. Department of Architecture; 02.01. Department of Conservation and Restoration of Cultural Heritage; 03.03. Department of Civil Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology; 02. Faculty of Architecture
This study aims to contribute to the understanding of the evolution of art and construction in the early settlements established by Turkish communities on the far west Asian coast by focusing on two developed examples in Urla Peninsula. Conventional surveying and evaluation techniques of architectural restoration and civil engineering were utilized. Key findings include the understanding of the hierarchy of rural settlements in the studied landscape: old Çesme the most developed village of peninsula in the 16th century. It was positioned along a valley in distance to coast, but in control of harbor that played significant role in commerce between Europe and Asia. Its mosque and tomb, dated to late 14th – early 15th centuries, used to crown it. Cylindrical minaret tower of mosque, domed tomb tower on a cubical base and squinch in the transition zone of mosque are evidences for Central Asian roots. Usage of local lime stone, re-usage of andesite blocks, framing of the stone blocks with bricks, and pendentive in tomb refer to Roman-Byzantine constructions. The study presents the development of Turkish art and construction on the far west Asian coast in the 14th‒15th centuries. Findings will be a guide for related conservation management in similar contexts. © 2024 The Author(s)
Citation - WoS: 11
Citation - Scopus: 10
Assessment of Construction Techniques and Material Usage in Izmir Rural Houses
(Taylor and Francis Ltd., 2015-11) Tunçoku, Selim Sarp; İnceköse, Ülkü; Akış, Tonguç; Yalçın, Mehmet Ali; 02.02. Department of Architecture; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
The domestic architecture in the rural villages of ̄zmir comprises a unique built environment with their masonry wall textures, semi-open sofas, round tiled-hipped roofs, and chimneys, and represents an important part of the cultural and architectural heritage. This assessment is mainly based on field observations that focus on the architectural and structural layout of intact, damaged, and destroyed houses. During field observation and the analysis of data certain plan typologies and relationships between the geological formations of the region and choice of materials and construction techniques were observed. While load-bearing masonry and timber skeleton systems are common, extensive use of timber laces, stone, and fired or adobe brick masonry with mud mortar and timber frames infilled with masonry materials were frequently seen. Generally, round timber elements such as wall plates, laces, lintels, posts, and frames of flooring systems are used. Architectural degenerations in authentic houses, defective details and partially due to the earthquake-prone nature of the region seismicity have been evaluated. An overall approach for the preservation and sustainability of this heritage is suggested.
Citation - WoS: 30
Citation - Scopus: 36
Assessment of Material Use in Relation To Climate in Historical Buildings
(Elsevier Ltd., 2007-02) İpekoğlu, Başak; Böke, Hasan; Çizer, Özlem; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Climate is among the most significant factors on the environmental performance, life span and/or durability of construction materials in buildings. Although some historical buildings have been abandoned and neglected for a very long period, their existence through centuries can be explained because of their durability to climatic conditions of the area where they are situated. In this study, construction techniques and characteristics of building materials used in some madrasas (historical education buildings) in Western Anatolia (Turkey) were examined in order to evaluate the conditions of the buildings by taking into account climatic conditions of the region. The studied Western Anatolian madrasas, which are in the moderate climatic conditions, were constructed out of rubble stone, brick and mortar in random bond with local workmanship by local builders who continued the older traditions and have survived for more than 300 years without maintenance and repair. On the other hand, most of the madrasa buildings in Central and Eastern Anatolia, which are in the steppe climatic conditions, were differently constructed with cut stone on their exterior surfaces to prevent the main structures of the walls composed of rubble stone and mortar from harsh climatic conditions of these regions. This study indicated that construction techniques and building materials appropriate to the climate might have been intentionally chosen for the survival of historical buildings over the centuries.
Citation - WoS: 170
Characteristics of Brick Used as Aggregate in Historic Brick-Lime Mortars and Plasters
(Elsevier Ltd., 2006) Böke, Hasan; Akkurt, Sedat; İpekoğlu, Başak; Uğurlu, Elif; 03.09. Department of Materials Science and Engineering; 02.01. Department of Conservation and Restoration of Cultural Heritage; 03. Faculty of Engineering; 01. Izmir Institute of Technology; 02. Faculty of Architecture
Mortars and plasters composed of a mixture of brick powder and lime have been used since ancient times due to their hydraulic properties. In this study, raw material compositions, basic physical, mineralogical, microstructural and hydraulic properties of some historic Ottoman Bath brick-lime mortars and plasters were determined by XRD, SEM-EDS, AFM, TGA and chemical analyses. The mineralogical and chemical compositions, microstructures, morphologies and pozzolanicities of the brick powders and fragments used as aggregates in the mortars and plasters were examined to find out the relationship between hydraulic properties of the mortars and the bricks. The characteristics of bricks used in the bath domes were also determined to investigate whether the brick aggregates used in mortar and plasters were prepared from these bricks. The results indicated that the mortars and plasters were hydraulic owing to the presence of crushed brick powders that have good pozzolanicity. The brick powders bad high pozzolanicity because they contained high amounts of calcium-poor clay minerals in their raw materials that were fired at low temperatures. On the other hand, bricks used in the domes had poor pozzolanicity with different mineralogical and chemical compositions from bricks used in mortars and plasters. Based on the results of the analysis, it was thought that the bricks manufactured with high amounts of clays were consciously chosen in the preparation of hydraulic mortars and plasters. (C) 2006 Elsevier Ltd. All rights reserved.
Citation - WoS: 49
Citation - Scopus: 57
Characteristics of Lime Produced From Limestone Containing Diatoms
(Elsevier Ltd., 2008-05) Böke, Hasan; Çizer, Özlem; İpekoğlu, Başak; Uğurlu Sağın, Elif; Şerifaki, Kerem; Toprak, Gülcan; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
In this study lime binder used in stone and brick masonry mortars of some historic Ottoman baths was examined to understand whether the binders were hydraulic or not. For this purpose the mineralogical and elemental compositions and the microstructure of lime binder were determined by XRD, SEM-EDS and TGA analyses. The results indicate that the lime used in the brick dome mortars of Ottoman baths was hydraulic. Taking into account the kiln and fuel conditions of the 15th century, the possibility of obtaining hydraulic lime at relatively low temperature was examined. For this purpose limestone containing diatoms was heated at a relatively low temperature (850 °C), then slaked and carbonated. After heating and slaking, calcium silicate giving hydraulicity to the lime was indicated by XRD and SEM-EDS analyses. These results show that the production of hydraulic lime at a relatively low calcination temperature (850 °C) was possible with 15th century kilns.
Citation - WoS: 41
Citation - Scopus: 42
Characterization of Materials Used in the Execution of Historic Oil Paintings by Xrd, Sem-Eds, Tga and Libs Analysis
(Elsevier Ltd., 2009-04) Şerifaki, Kerem; Böke, Hasan; Yalçın, Şerife; İpekoğlu, Başak; 02.01. Department of Conservation and Restoration of Cultural Heritage; 04.01. Department of Chemistry; 04. Faculty of Science; 01. Izmir Institute of Technology; 02. Faculty of Architecture
In this study, material characteristics of historic oil paintings in a 19th century church in Ayvali{dotless}k/Turkey were investigated to propose the treatments to be used in their conservation and protection. For this purpose, physical, chemical and mineralogical compositions and the microstructure of the paintings were determined by X-ray Diffraction, Scanning Electron Microscope, Thermo Gravimetric Analyzer, Differential Scanning Calorimeter, Infrared Spectroscopy and Laser Induced Breakdown Spectroscopy. Analysis results showed that the paintings were composed of very thin binding and white priming layers on which the pigments were applied. Binding layers were composed of polymerized vegetable oil with Zinc Oxide. Priming layers were composed of anglesite mineral in polymerized vegetable oil. Pigments used in paintings were mainly green earth, red chrome and iron oxide.
Citation - WoS: 1
Citation - Scopus: 2
Consolidation of a Bath Ruin in an Archaeological Site
(Taylor and Francis Ltd., 2022) Durmuşlar, Feyza; Turan, Mine; Yücetürk, Kutay; Aktaş, Engin; 03.03. Department of Civil Engineering; 02.01. Department of Conservation and Restoration of Cultural Heritage; 03. Faculty of Engineering; 01. Izmir Institute of Technology; 02. Faculty of Architecture
The study has focused on consolidation of a historical bath ruin in an archaeological site. Cevher Pasa Bath, which is located in Tabae archaeological site in Denizli, Turkey and dated to the 15th century, presents structural problems. The aim of the study is to propose a framework for planning consolidation of the ruins of Cevher Pasa Bath so that conservation work regarding similar masonry ruins in archaeological sites can be guided. Thus, methods of architectural restoration and civil engineering are combined in an interdisciplinary scope. Provision of temporary shoring as an emergency intervention, consolidation and presentation of the ruin within the scope of an interdisciplinary restoration project, and monitoring of the asset within the frame of a monument management plan are suggested, respectively. Structural analysis considering stress and overturning moment checks are performed. Consolidation work includes only supporting of arch remains. Some walls of the ruin are weaker than other parts. These parts need further detailed analysis, and if necessary, further consolidation and strengthening are to be carried out. The monument management plan points out the necessity of collaboration of local and central administrations, and also non-governmental organisations.
Citation - WoS: 7
Citation - Scopus: 7
Dampness Problems in a Historic House in Izmir, Turkey
(Taylor and Francis Ltd., 2009) Yardım, Bülent; Tunçoku, Selim Sarp; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
The study, as a preliminary stage of the restoration work of a historic house from Levantine ages of Izmir in the nineteenth century, involves the examination of the dampness basement problems. Moisture contents and temperature of the wall surfaces were monitored by non-destructive techniques, such as direct measurements of electrical conductivity and infrared thermography. The results were evaluated in the light of physical properties, moisture, and soluble salt types and contents in the materials, outdoor, and indoor climatic conditions, layout of the site, and architectural features of the building. In addition to rising damp and lack of sufficient ventilation for years, some faulty details along the intersections with the terraces of the neighbor buildings, and intersection with the asphalt coated street and the basement windows that gave way for rainwater leaks were the other sources of dampness. Some cool but relatively dry parts of the walls were found to be potential zones for dampness problem through condensation between midnight and early mornings, especially in winter.
Citation - WoS: 10
Citation - Scopus: 12
Effect of Urban Transformation on the Values of Historic Sites Around Mosques: Two Cases in Manisa, Turkey
(Higher Education Press Limited Company, 2020) Büyükkılıç Koşun, Suna; Turan, Mine; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
This study presents a framework for assessing the cultural asset values of historic sites around mosques. Case studies are selected from provinces of Manisa, Turkey, namely, Çarşı in Salihli with its new urban development and Pazaryeri in Gördes that is abandoned and currently considered as an archaeological site. Literature review, archive research, historical research, comparative study, and site survey are carried out to evaluate the urban development of site neighborhoods with a retrospective perspective. An approach presenting the effects of urban transformations on the cultural asset values of the historic neighborhood centers is proposed. The cases reveal that the urban aesthetic is nearly all lost today, but the holiness of each site preserves its authenticity while the historic land use is sustained. Their preservation problems are lack of maintenance and abandonment due to disasters, illegal interventions, inappropriate development plans, and unsuitable restoration approaches. The principles proposed for managing these historic environments consider their cultural asset values in relation to urban history, development of coherent strategies for their presentation, and participation of all actors to their preservation and development. © 2020 The Authors
Citation - WoS: 44
Citation - Scopus: 44
Ettringite Formation in Historic Bath Brick-Lime Plasters
(Elsevier Ltd., 2003-09) Böke, Hasan; Akkurt, Sedat; 03.09. Department of Materials Science and Engineering; 02.01. Department of Conservation and Restoration of Cultural Heritage; 03. Faculty of Engineering; 01. Izmir Institute of Technology; 02. Faculty of Architecture
Two types of historic hydraulic brick-lime plasters from a selected Ottoman bath are examined to characterize their technology and the appropriateness of their use in bath. The first type of plaster is original and structurally sound, while the historic repair plaster is the second type and is found to have deteriorated despite being exposed to the same environment. This difference is investigated by comparing their raw material compositions and the pozzolanic activities of the brick powders used in the plasters. Although these results showed no significant differences, ettringite crystals are detected in the historic repair ones by XRD, FTIR, and SEM-EDS analysis. The repair plaster may have lost its integrity owing to the expansion generated by the growth of ettringite crystals in the plaster. In this study, the ettringite formation is discussed in relation to hydration reaction products of lime-brick plasters, possible sources of gypsum, and the climatic conditions of historic bath building.
Citation - WoS: 14
Citation - Scopus: 17
An Evaluation of Decision-Making Process on Maintenance of Built Cultural Heritage: the Case of Visby, Sweden
(Elsevier Ltd., 2019) Eken, Esra; Taşcı, Burcu; Gustafsson, Christer; 01. Izmir Institute of Technology
Preventive conservation is a significant approach for the conservation of built cultural heritage. This approach aims to prevent major deteriorations through monitoring and a planned maintenance programme. Although Visby, as one of the most important world heritage sites of Sweden, has many governmental organizations for conservation, none has a particular focus on maintenance. This paper examines the perspective of the habitants about the maintenance of their dwellings in the World Heritage Site of Visby. In this context, a survey is carried out to determine the main tendency of the habitants regarding the maintenance of historic buildings inside the city walls. Thus, the survey requires not only quantitative methods based on statistical data, but also qualitative methods based on interpretative data. The questionnaire conducted with the owners and tenants is the primary data collection tool. Both the owners and the tenants agree with the necessity of a non-governmental organisation in Visby to provide advice on maintenance. Maintenance and regular monitoring prevent costlier and large-scale repairs and are essential to retaining the cultural significance of Visby. This study can be helpful for adopting the community's opinion to the regular maintenance programme and promoting cooperation between non-profit organizations and governmental organizations in cultural heritage.
Citation - WoS: 18
Citation - Scopus: 21
Evaluation of Heat Treated Clay for Potential Use in Intervention Mortars
(Elsevier Ltd., 2010-08) Budak, Meral; Akkurt, Sedat; Böke, Hasan; 03.09. Department of Materials Science and Engineering; 02.01. Department of Conservation and Restoration of Cultural Heritage; 03. Faculty of Engineering; 01. Izmir Institute of Technology; 02. Faculty of Architecture
In this study, raw material compositions, basic physical, mineralogical, microstructural and hydraulic properties of lime mortars used in two selected historic buildings were determined by XRD, SEM-EDS and TGA analyses. The results showed that the mortars were hydraulic due to the use of pozzolanic aggregates. Taking into account the hydraulic characteristics of mortars due to the use of pozzolanic aggregates, the possibility of obtaining hydraulic mortars by using pozzolanic aggregates produced from heated commercial clays was investigated. For this purpose, four clay samples used in the ceramic industry in Turkey were heated at varying temperatures of 400, 450, 500, 550, 600, 800, and 1200°C with a heating rate of 10°C/min. Pozzolanic properties of heated clay samples were determined. The results showed that commercial clays studied are well suited for use as pozzolanic aggregates when they are heated between 500 and 700. °C. This is also confirmed by testing the compressive strengths of the three month aged laboratory-produced mortars that contained thermally treated clay (at 600°C) as pozzolanic aggregates. Compressive strength of this mortar was around 5. MPa which is satisfactorily high. © 2009 Elsevier B.V.
Citation - WoS: 19
Citation - Scopus: 20
Execution Technique and Pigment Characteristics of Byzantine Wall Paintings of Anaia Church in Western Anatolia
(Elsevier Ltd., 2018-02) Demir, Serap; Şerifaki, Kerem; Böke, Hasan; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
In this study, material characteristics of wall paintings executed in 11th Century Byzantine Church located in archaeological site of Anaia (Turkey) were investigated to provide historical information of the painting techniques. For this purpose, physical, chemical and mineralogical compositions of the paintings were determined by X-Ray Diffraction, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy coupled with Energy Dispersive spectroscopy and Thermo-Gravimetric Analysis. Analysis results indicated that the paintings were executed using lime-secco technique. In this technique, pigments were mixed with lime and applied on a smooth plaster layer. Pigments used were mainly iron oxides for red, yellow and purple paintings, aluminosilicates such as celadonite for green paintings and lazurite for dark blue paintings.
Citation - WoS: 1
Citation - Scopus: 1
Hellenistic Masonry Techniques in Southern and Western Anatolia
(Elsevier, 2022-10) Gençer, Funda; Hamamcıoğlu Turan, Mine; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Various Hellenistic masonry wall classifications have been given for Egypt, Greece, Persia, Phoenicia, Anatolia, etc., in literature. However, it is hardly possible to classify all masonry types in Anatolia because it varies regionally and has unique qualities. An important subject of research is what causes this diversity. Thus, this study aims to identify the original wall configurations and facings as well as the factors that define these structures by examining the undocumented walls in Anatolia's western and southern regions. Anatolian-specific composite techniques will be deciphered. The masonry techniques used in the walls of Caria, Lycia, and Pamphylia Regions, which are rich in examples of Hellenistic city walls, in the Western and Southern coasts of Asia Minor are compared in terms of their arrangement of blocks, wall profiles, and finishing of the faces. The first step of the method is a literature survey for determining the distribution of Hellenistic masonry walls in Anatolia. This was followed by a preliminary site survey. The dry-joint masonry walls that have sustained their authenticity and remain that have traces of their original composition were selected for accurate examination. Walls in Latmos, Alinda, Alabanda, Tekekale, Myndos in Caria; Sillyum, Side, and Perge in Pamphylia; and Oenoando and Isium in Lycia were examined. Their construction techniques and material usage were determined with the measured survey, visual analysis, and laboratory analysis. Also, the documented masonry patterns were compared with the masonry arrangements in different geographies of the world. Consequently, this study demonstrates that different masonry arrangements emerged in Anatolia as a result of varieties in the local environment. There are unique composite examples of integrating polygonal and ashlar leaves with headers and squat blocks in Anatolia.
Citation - WoS: 4
Citation - Scopus: 5
Impacts of Tourism-Led Constructions on Geoheritage Sites: the Case of Gilindire Cave
(Springer, 2020) Aydın, Rozelin; Yüceer, Hülya; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Geological heritage sites are of great importance both for better understanding of the formation of the earth and for transferring its memory to future generations. People's curiosity to access this information leads to tourism activity, in which caves constitute a significant place as sources of geotouristic attractions. In the case of Turkey, caves can also be considered as the major source of tourist attractions and thus economic gain providers for local communities. Focusing on the contribution of tourism to the economy, most local authorities allow tourism activity for the caves without adequate research. This leads to the construction of buildings for the needs of visitors and the installation of walking pathways, ladders, and luminaires inside the caves, which are in most cases harmful to cave ecosystems. Located on the Mediterranean coastline of Turkey, Gilindire Cave presents such a case. Unlike other caves in Turkey, it is among three caves that were found to occur in the Cambrian limestone caves literature. Thus, any data to be detected in this environment is of scientific importance. However, service buildings constructed in the upper elevation of the cave and visitor stairs and luminaires installed in the interior constitute major threats to accessing this valuable information. In this context, the study aims to examine the caves in the scope of geotourism and tourism-led constructions through the example of Gilindire Cave. As a result, the study underpins the importance of diligent investigation of cave ecosystems prior to any tourism-led activity and principles for the service structures to be built in such geoheritage sites.
Citation - WoS: 7
Citation - Scopus: 9
Interior Plastering of Ottoman Bath Buildings
(Elsevier Ltd., 2019) İpekci, Emre; Uğurlu Sağın, Elif; Böke, Hasan; 02.01. Department of Conservation and Restoration of Cultural Heritage; 01. Izmir Institute of Technology; 02. Faculty of Architecture
Ottoman baths were peculiar buildings with their function in community life, architectural characteristics and material use. Their interior spaces were exposed to high humidity and temperatures that made the building structure vulnerable to physical, chemical, physicochemical and biological degradations. Plasters used on the interior wall surfaces were the most important agents to protect the structure from deterioration and provide durability. This study aims to exhibit the plaster characteristics of Çinili Bath in İstanbul which was an outstanding example of Ottoman baths and built by Great Architect Sinan. Basic physical properties, raw material compositions, mineralogical, microstructural and hydraulic properties of original brick-lime plasters called as horasan (khorasan) plasters used on the walls were determined by XRF, XRD, SEM-EDS and TGA. Multilayered plaster application together with the use of glazed tiles were observed on the wall surfaces of all interior spaces. The plasters were produced from pure lime and pozzolanic crushed brick or tile aggregates and hydraulic because of the pozzolanic properties of aggregates. They are stiff, compact and durable in hot and humid conditions of bath buildings due to their self-healing properties and the formation of calcium silicate hydrates and calcium aluminate hydrates at the lime-brick interfaces and in the pores of the pozzolanic brick aggregates by the reaction of lime. Characteristics of brick aggregates were compared with the construction bricks used in the building. Their chemical and mineralogical compositions revealed that the aggregates had not been produced from construction bricks. All the results indicated that brick-lime plasters were the most suitable materials for bath buildings to protect the structure from the effect of water. © 2019 The Authors
Citation - WoS: 25
Citation - Scopus: 26
Lime Mortar Technology in Ancient Eastern Roman Provinces
(Elsevier, 2021) Uğurlu Sağın, Elif; Duran, Hasan Engin; Böke, Hasan; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02.03. Department of City and Regional Planning; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Natural pozzolanic aggregates were discovered during the Roman era and have been widely used in hydraulic mortar production. Despite the claims of ancient treatises, the properties of pozzolans and the technology of hydraulic lime mortars were well known and applied in the eastern provinces of the Roman Empire. In this study, the characteristics of lime mortar at the ancient sites of Aigai and Nysa located in Western Anatolia were investigated to elicit the technology applied. The raw material compositions of the mortars, the hydraulic properties of the binders, and the mineralogical and chemical compositions of the natural pozzolans used were determined via X-ray diffraction, X-ray fluorescence spectroscopy, scanning electron microscopy coupled with energy dispersive spectroscopy, and thermogravimetric analysis. The major and trace element compositions of the natural pozzolans were evaluated via multivariate statistical analysis to determine whether the same local raw material resources were used in their manufacture. The analytical results indicated that the Roman mortars were hydraulic, stiff, and durable materials due to the use of natural pozzolanic aggregates mostly comprising dacite. Although the aggregates had similar mineralogical compositions, multivariate statistical analysis revealed that their chemical compositions were clearly distinguishable, indicating the use of different sources of raw materials. Thus, it was inferred that similar pozzolan resources were known and deliberately used to produce hydraulic mortars in the eastern ancient Roman provinces.
Citation - WoS: 8
Citation - Scopus: 9
A Literature Review on the Management of Underwater Cultural Heritage
(Elsevier, 2023) Bulut, Nihan; Yüceer, Hülya; 02.01. Department of Conservation and Restoration of Cultural Heritage; 02. Faculty of Architecture; 01. Izmir Institute of Technology
Managing cultural heritage is difficult, even when presented with many opportunities. The management of underwater cultural heritage (UCH) expands these challenges, as issues such as mapping, monitoring, access, presentation, and ownership can become more complex. This article reviews the existing literature on theoretical research and various case studies in order to establish common themes on the management of UCH. Initially, a keyword search was carried out in two of the most extensive scientific databases. Publications were reviewed according to several criteria. Various data have been obtained, such as the change in the number of publications over the years, which journals are more interested in the subject, which topics are at the forefront, which places are preferred for case studies, and who are more likely to conduct research. The results show that the studies on the management of UCH mainly focus on evaluating the current management examples and their issues, policy development, legislation, and documentation of the sites. The cultural heritage in the case studies varies from archaeological and architectural remains to shipwrecks and, sometimes, movable objects, despite the emphasis on in-situ built heritage in the search criteria. Meanwhile, the researchers are primarily from universities in Western countries such as the United States and the United Kingdom. Additionally, many publications evaluate national policies and emphasize the importance of public participation, interpretation, and access. While still not much compared to land heritage, the number of studies has increased over the years. As the results of the review are discussed, suggestions are offered for possible future publications.

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