Browse > Article
http://dx.doi.org/10.9720/kseg.2015.2.165

CLSM [Confocal Laser Scanning Microscope] Observation of the Surface Roughness of Pressurized Rock Samples During Freeze/Thaw Cycling  

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)
Publication Information
The Journal of Engineering Geology / v.25, no.2, 2015 , pp. 165-178 More about this Journal
Abstract
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.
Keywords
freezing/thawing experiment; line roughness; surface roughness; CLSM;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Reyes, O. and Einstein, H. H., 1991, Failure mechanisms of fractured rock - A fracture coalescence model, International Society for Rock Mechanics, 66, 333-340.
2 Shen, B., 1995, The mechanism of fracture coalescence in compression-experimental study and numerical simulation, Engineering Fracture Mechanics, 51(1), 73-85.   DOI
3 Um, J. G. and Shin M. K., 2009, Variations of physicomechanical properties of the cretaceous mudstone in Haman, Gyeongnam due to freeze-thaw weathering, Tunnel & Underground Space (Journal of Korean Society for Rock Mechanics), 19(2), 146-157 (in Korean with English abstract).
4 Um, J. G., Woo, I. and Park, H. J., 2014, Engineering Geological Characteristics of Freeze-Thaw Weathered Gneiss in the Wonju Area, Korea, The Journal of Engineering Geology, 24(2), 161-169.   DOI
5 Yavuz, H., Altindag, R., Sarac, S., Ugur, I., and Sengun, N., 2006, Estimating the index properties of deteriorated carbonate rocks due to freeze-thaw and thermal shock weathering, International Journal of Rock Mechanics and Mining Sciences, 43(5), 767-775.   DOI
6 Lee, M. H., Kim, J. W., and Chang, K. T., 2007, The influence of rock joint roughness and normal stress on shear behavior, Korean Society for Rock Mechanics, 17(3), 186-196 (in Korean with English abstract).
7 Lee, S. D., Kang, J. H., and Lee, C. I., 1994, Shear strength and deformation behavior of rock joint with roughness, Korean Society for Rock Mechanics, 4, 261-273 (in Korean with English abstract).
8 Lee, S. M., Kim, H. S., and Na, G. C., 1980, 1/50,000 Daejeon map and geologic map guide, Korea Institute of Geoscience and Mineral Resources, 26p.
9 Leichnitz, W., 1985, Mechanical properties of rock joints, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 22(5), 313-321.   DOI
10 Park, C. H. and Bobet, A., 2010, Crack initiation, propagation and coalescence from frictional flaws in uniaxial compression, Engineering Fracture Mechanics, 77(14), 2727-2748.   DOI
11 Lu, W., Chakravarthula, S. S., Chen, J., and Qiao, Y., 2012, Propagation of a cleavage crack front across a field of persistent grain boundaries, International Journal of Solids and Structures, 49(3-4), 584-589.   DOI
12 McGreevy, J. P. and Whalley, W. B., 1985, Rock moisture content and frost weathering under natural and experimental conditions: a comparative discussion, Artic and Alpine Research, 17(3), 337-346.   DOI
13 Nicolson, D. T. and Nicholson, F. H., 2000, Physical deterioration of sedimentary rocks subjected to experimental freeze-thaw weathering, Earth Surface Processes and Landforms, 25(12), 1295-1307.   DOI
14 Park, H. I., Lee, J. D., and Jeong, J. G., 1977, 1/50,000 Yuseong map and geologic map guide, Korea Institute of Geoscience and Mineral Resources, 21p.
15 Hong, S. I., Shin, H. B., Kim, D. M., and Kim, H. S., 2011, Structural behavior evaluation according to roughness of discontinuum surface of stone pagoda, Architectural Institute of Korea, 27(10), 63-70 (in Korean with English abstract).
16 Horii, H. and Nemat-Nasser, S., 1986, Brittle failure in compression: splitting, faulting and brittle-ductile transition, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 25(3), 337-374.
17 Jang, H. S., Jang, B. A., and Lee, J. S., 2004, Variations of engineering geological characteristics of the cretaceous shale from the pungam sedimentary basin in Kangwon-do due to freezing-thawing, The Journal of Engineering Geology, 14(4), 401-416 (in Korean with English abstract).
18 Korea Institute of Geoscience and Mineral Resources (KIGAM), 2013, Technical report of development of quantitative assessment technology for long-term geo- logical safety factors, KIGAM TR-12-6, 1-39.
19 Kim, D. B., Son, B. K., and Lee, C. I., 2001, A numerical study of the shear behavior of a rock joint considering quantitative roughness parameters, Korean Geotechnical Society, 17(4), 279-288 (in Korean).
20 Kim, J. T., Jeong, G. C., Kim, M. I., Song, J. Y., and Park, C. K., 2004, Characterization of fracture roughness in coarse·medium·fine grained granite, The Journal of Engineering Geology, 14(2), 147-168 (in Korean with English abstract).
21 Kwag, J. Y., Lee, S. E. and Lim, H. U., 2003, Anisotropic shear strength of artificially fractured rock joints under low normal stress, Journal of Korean Society for Rock Mechanics, 13(3), 169-179 (in Korean with English abstract).
22 Labuz, J. F., Shah, S. P., and Dowding, C. H., 1985, Experimental analysis of crack propagation in granite, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 22(2), 85-98.   DOI
23 Bae, K. Y. and Lee, C. I., 2002, Development of a 3D roughness measurement system of rock joint using laser type displacement meter, Korean Society for Rock Mechanics, 12(4), 268-276 (in Korean with English abstract).
24 Baek, H. J., 1997, Characteristics of natural and experimental fracture propagation in rocks, The Journal of Engineering Geology, 7(1), 53-62 (in Korean with English abstract).
25 Brotons, V., Tomás, R., Ivorra, S., and Grediaga, A., 2014, Relationship between static and dynamic elastic modulus of calcarenite heated at different temperatures: the San Julián’s stone, Bulletin of Engineering Geology and the Environment, 73(3), 791-800.   DOI
26 Haeri, H., Shahriar, K., Marji M. F., and Moarefvand, P., 2014, Experimental and numerical study of crack propagation and coalescence in pre-cracked rock-like disks, International Journal of Rock Mechanics & Mining Sciences, 67, 20-28.   DOI
27 Chen, T. C., Yeung, M. R., and Mori, N., 2004, Effect of water saturation on deterioration of welded tuff due to freeze–thaw action, Cold Regions Science and Technology, 38(2-3), 127-136.   DOI