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http://dx.doi.org/10.9720/kseg.2013.3.271

CLSM Analysis of Change in Roughness and Physical Properties of Granite after Freeze-Thaw Experiments  

Jeong, Jongtaek (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Choi, Junghae (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Chae, Byung-Gon (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Jang, Bo-An (Department of Geophysics, Kangwon National University)
Publication Information
The Journal of Engineering Geology / v.23, no.3, 2013 , pp. 271-281 More about this Journal
Abstract
Freeze-thaw experiments were conducted to evaluate changes in surface roughness and physical properties in samples of granite from Ilgwang and Imki mines, Korea. The temperature range in the experiments was $-20^{\circ}C$ to $40^{\circ}C$, based on typical summer and winter temperatures in Korea, and the surface was observed every 20 cycles. One cycle comprised 1 hour of heating or cooling of the samples and 1 hour during which the target temperature was maintained. With increasing repetitions of the freeze-thaw experiment, porosity increased by 0.05%-0.15% in the two samples and the dry weight increased, whereas the volume of the soil and saturation weight decreased. Observations by confocal laser scanning microscope (CLSM) revealed that line and surface roughness parameters showed a tendency to increase and decrease, respectively, with elapsed time. Changes in surface roughness were apparent on the CLSM images.
Keywords
Freez-thaw experiment; CLSM; Surface roughness;
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Times Cited By KSCI : 2  (Citation Analysis)
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