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Comprehensive Review of Studies on Metamorphic Rocks

International Journal of Geosciences 2023年第10期14卷 999-1035页

作者： Hakan Citak Mustafa Coramik Huseyin Gunes Sabri Bicakci Yavuz Ege Department of Electric and Energy Balikesir Vocational High School Balikesir University Balikesir Turkey Department of Physics Necatibey Faculty of Education Balikesir University Balikesir Turkey Department of Computer Engineering Faculty of Engineering Balikesir University Balikesir Turkey Department of Electric and Electronics Engineering Faculty of Engineering Balikesir University Balikesir Turkey

Marble is a metamorphic rock, which is one of the 3 basic rock types (magmatic, sedimentary, metamorphic) forming the earth’s crust. The major characteristic sought after in a rock mass in the field for it to be exportable and usable as marble is its suitability to be cut in blocks. In the process of producing marble slabs from marble blocks, the blocks are expected not to contain potentially problematic hard or weak zones and their geomechanical and chemical properties should conform to the relevant standards. Ignoring of the geological properties of the rock in the process of deciding for marble production at a marble site and determination of production location, direction and method is the most important parameter that would increase production loss. In order to reduce losses by determination of geological properties of marble, many academic studies have been conducted on the effects of water saturation, temperature, freezing and thawing on its mechanical and fracture properties. There are further studies on crack propagation in marble under stress. However, even those marble blocks that are obtained based on geological parameters may suffer serious cracks or fractures due to stresses caused by their weight and geometry. Therefore, cutting direction is of critical importance in order to minimize marble waste in the process of cutting a marble block which is brought to the inventory or processing site with cracks, cavities or fractures. Certain studies exist within such context, where the geometry of the discontinuity within a block is determined using non-destructive methods, such as ultrasonic testing, in order to determine the appropriate cutting direction. Such studies made use of ultrasonic waves to determine the physical and chemical structures of magmatic and sedimentary rocks by measuring the progress velocity of sonic waves in the rock. Said studies, however, mostly worked on sedimentary and magmatic rock specimens, focusing less on metamorphic rocks suc

关键词： Marble Metamorphic Rock Ultrasonic Test Crack cutting direction

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