Browsing by Author "Hatir, Mehmet Ergun"

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Citation - WoS: 1
The Effect of Case Hardening on the Natural Preservation of Stone Monuments, Fraktin Monument, Türkiye
(Springer Heidelberg, 2025) Korkanc, Mustafa; Ince, Ismail; Huseyinca, Mehmet Yavuz; Tosunlar, Mehmet Bahadir; Hatir, Mehmet Ergun
Case-hardening processes that develop in monuments reduce the porosity of rocks while increasing surface hardness. This situation may contribute to the transfer of cultural stone heritage markers to future generations by limiting the penetration into the rock structure of water, which is the most destructive agent in atmospheric weathering processes. This study focused on the Fraktin relief monument, which was created by the Hittites in the 13th century BCE by carving into the rock surface. The site was investigated to reveal the case-hardening mechanism and its effects on the physical properties of the rock. The geochemical formation mechanism of the surface-hardening process, which contributed to the survival of the Fraktin relief monument, was examined by use of scanning electron microscope-energy dispersive spectrometry (SEM-EDS) and analysis by an inductively coupled plasma-mass spectrometer (ICP-MS). In addition, the effect of the hardening on the physical properties of the rock was investigated with nondestructive tests applied both in situ and in a laboratory. The SEM-EDS and ICP-MS analyses revealed that amorphous silica filled the pores of the rock and created surface hardening. This situation has increased the geotechnical properties of the unit in which the monument was carved, making it more resistant to atmospheric processes.
The Effect of Particulate Matter (PM2.5 and PM10) on Human Health and Cultural Heritage in the Historical City Centre of Konya
(Springer India, 2025) Hatir, Mehmet Ergun; Ince, Ismail; Hatir, Ahmet Emre
The population, that has increased dramatically with industrial activities in the last century, causes air pollution in cities. Particulate matter, among the pollutants that affect air pollution, threatens public health and historical buildings by trapping hazardous elements and carrying them with the wind. Therefore, identifying areas where particulate matter is concentrated can be an important tool for the protection of human health and cultural heritage. To this end, the relationship between black crust formation on historical buildings and the presence of particulate matter (PM2.5 and PM10), as well as its potential link to respiratory diseases in humans, was investigated in the historical city center of Konya, where air pollution levels have been considerably high over the past few decades. The study was conducted through both in-situ measurements (PM2.5 and PM10) and laboratory analyses, including SEM-EDX, XRF, and physical properties assessments. According to the findings of the study, it was determined that both the number of respiratory patients and the formation of black crust on monuments increased in regions where particulate matter was concentrated.
Laboratory Modelling of Fire Effects on Monuments Built With Pyroclastic Rocks: Niğde Region, Turkey
(Routledge Journals, Taylor & Francis Ltd, 2024) Ince, Ismail; Atas, Mehmet Sahin; Hatir, Mehmet Ergun; Korkanc, Mustafa
Fires can have devastating effects on cultural stone heritage. Micro and macro changes occur in building stones exposed to high temperatures. Micro changes also cause changes in the physical properties of rocks. These changes not only cause instant damage to the monuments, but also make them less resistant to atmospheric processes and increase the rate of deterioration. Modelling these changes in cultural heritage in a laboratory environment can play an important role in ensuring the continuity of monuments. For this purpose, pyroclastic rock taken from the Ni & gbreve;de (Turkey) region was subjected to heat-treatment and the changes in the samples were investigated with XRD, SEM-EDX, TGA, spectrophotometry, porosity, P-wave velocity, capillary water absorption, and heat treatment loss. It was determined that the mineralogical changes in the structure of the rock with the increase in temperature affected various micro and macro properties.