Experimental Investigation of the Physical Properties and Microstructure of Slate under Wetting and Drying Cycles Using Micro-CT and Ultrasonic Wave Velocity Tests
| Autor: | Chengren Xiong, Lu Sha, Junwei Ma, Zhang Bocheng, Tang Huiming, Xiaoxu Niu, Ding Xia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Letter slate microstructure 0211 other engineering and technologies 02 engineering and technology micro-CT 010502 geochemistry & geophysics lcsh:Chemical technology 01 natural sciences Biochemistry ultrasonic wave velocity test physical properties Analytical Chemistry lcsh:TP1-1185 Electrical and Electronic Engineering Composite material Micro ct Instrumentation 021101 geological & geomatics engineering 0105 earth and related environmental sciences Wave velocity Microstructure Atomic and Molecular Physics and Optics Volume (thermodynamics) wetting and drying cycles Ultrasonic sensor Wetting |
| Zdroj: | Sensors, Vol 20, Iss 4853, p 4853 (2020) Sensors (Basel, Switzerland) |
| ISSN: | 1424-8220 |
| Popis: | Cyclic wetting and drying processes have been considered as important factors that accelerate the weathering process and have deteriorative effects on rock properties. In the present study, a fully nondestructive and noninvasive testing approach utilizing micro-CT and ultrasonic wave velocity tests was employed to investigate the microstructure of slate under wetting and drying cycles. We studied variations in the physical properties, including the dry weight and the velocities of P- and S-waves versus the number of wetting and drying cycles. The internal microstructural distributions were visualized and quantified by the 3D reconstruction and hybrid image segmentation of CT images. The degree of deterioration caused by wetting and drying cycles was reflected by exponential decreases of physical properties, including dry weight and velocities of the P- and S-waves. Parameters relating to the microfracture diameter, volume, etc. were quantified. The nondestructive and noninvasive testing approach utilizing micro-CT and ultrasonic wave velocity tests has potential for the detection and visualization of the internal microstructure of rock under wetting and drying cycles. |
| Databáze: | OpenAIRE |
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