- Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi
- Cilt: 14 Sayı: 4
- Effect of thermal damage on brittleness and chemical properties of sandstone
Effect of thermal damage on brittleness and chemical properties of sandstone
Authors : Utku Sakız
Pages : 1519-1529
Doi:10.28948/ngumuh.1592071
View : 35 | Download : 52
Publication Date : 2025-10-15
Article Type : Research Paper
Abstract :Mine fires may cause many ground collapses that threaten the safety of the underground coal mining applications due to the coal meassure rocks exposed to varying heat. This research focuses on investigating the changes in thermal damage and brittleness properties of sandstone from the Zonguldak Coal Basin at temperatures ranging from 25 to 600°C. In the determination of rock brittleness, five different approaches calculated depending on the strength parameters were considered. According to the findings of this study, statistical analysis (regression analysis) were revealed over 0.85 between rock thermal damage (Dt) and rock brittleness of sandstone. Moreover, new estimation models have also been developed that can predict the brittleness properties from the thermal damages of the thermally exposed sandstone. On the other hand the chemical composition of the rocks can be used to determine the thermal damage and thus the brittleness. In this context, a negative linear relationship was obtained between Dt and Al2O3, while a positive linear relationship was obtained between Na2O and SiO2.Keywords : Maden yangınları, Sıcaklık, Kırılganlık, Termal hasar, Kumtaşı
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