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http://dx.doi.org/10.7843/kgs.2015.31.7.41

Physical and Mechanical Characteristics of Basalts in Northwestern and Southeastern Jeju Island  

Yang, Soon-Bo (Port and Airport Research Institute, National Research and Development Agency)
Publication Information
Journal of the Korean Geotechnical Society / v.31, no.7, 2015 , pp. 41-52 More about this Journal
Abstract
Volcanic rocks in Jeju Island have vesicular structure caused by various environmental factors, and indicate the differences in geological and mechanical characteristics from region to region. In addition, the bedrock of Jeju Island shows stratified structure, that is, soft layers composed of pyroclastic rocks or cavities are irregularly developed between the basalt layers by several times of volcanic activity. In this study, various physical tests and unconfined compressive strength test were conducted for intact rocks sampled in northwestern onshore and offshore of Jeju Island. The results obtained in the tests were compared with the physical and mechanical characteristics of intact rocks sampled in southeastern offshore of Jeju Island. As a results, it was confirmed that the physical and mechanical characteristics of basalts sampled in northwestern Jeju Island were similar to those of basalts sampled in southeastern offshore of Jeju Island. In addition, it was possible to estimate approximate design parameters from the correlation of mechanical properties with physical properties of basalts in Jeju Island.
Keywords
Basalt of Jeju Island; Absorption; Bulk specific gravity; Ultrasonic velocity; Unconfined compressive strength; Elastic modulus; Poisson's ratio;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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