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http://dx.doi.org/10.12652/Ksce.2012.32.6C.275

Physical and Mechanical Characteristics of the Antarctic Rocks Exposed to the Extreme Environment  

Kim, Kiju (한국건설기술연구원)
Kim, YoungSeok (한국건설기술연구원)
Hong, Seung Seo (한국건설기술연구원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.6C, 2012 , pp. 275-284 More about this Journal
Abstract
The Antarctic continent exposed to strong wind, very low temperature, and extremely dry condition. The freezing-thawing cycles under this extreme environment change the mechanical characteristics of rocks near the ground surface. To investigate the effect of freezing-thawing cycles under the extreme environment understand on geotechnical properties of rocks, rocks from the Antarctica were collected from two places: (1) West Antarctic Cape Burks and (2) East Antarctic Terra Nova Bay areas. The rock characteristics of these two areas were described and compared. For Terra Nova Bay area, rock characteristics of rocks near the surface and depths exceeding 2.9 m were examined. The 'near-the-surface rocks' averages of absorption rate, P-wave velocity, and unconfined compressive strength were 0.56%, 3,717 m/s, and 109MPa, respectively; while, those values of 'deep-sited rocks' were 0.24%, 4,670 m/s, and 88MPa. From the measurements, it was found that the effects of weathering were not significant on mechanical characteristics (strength) but were pronounced on physical characteristics(absorption and P-wave velocity).
Keywords
Antarctica; extreme environment; rock; freezing-thawing; physical.mechanical properties;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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