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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Hye-jin (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) Kim, Gyo-won (College of Natural Science, Kyungpook National University)
저널정보
대한지질공학회 The Journal of Engineering Geology 지질공학 제25권 제2호
발행연도
2015.1
수록면
165 - 178 (14page)

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Physical and chemical weathering degrades rock, affecting its structural properties and thus the stability of stone buildings or other structures. Confocal laser scan microscopy (CLSM) is used here to observe temporal changes in the surface roughness of rock samples under simulated accelerated weathering. Samples were pressurized to 50, 55, or 70 MPa using a pressure frame, and subjected to freeze/thaw cycling controlled by a thermostat. The temperature was cycled from -20℃ to 40℃ and back. After each 20 cycles, CLSM was used to assess the change in surface roughness, and roughness factors were calculated to quantify the progression of the surface condition over time. Variations in cross-section line-roughness parameters and surface-roughness parameters were analyzed for specific parts of the sample surfaces at 5× and 50× magnification. The result reveals that the highest and lowest values of the roughness factors are changed according to elapsed time. Freezing/thawing at high pressure caused larger changes in the roughness factor than at low pressure.

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