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http://dx.doi.org/10.7843/kgs.2015.31.11.33

Cohesion and Internal Friction Angle of Basalts in 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.11, 2015 , pp. 33-40 More about this Journal
Abstract
Volcanic rocks in Jeju Island indicate the differences in geological and mechanical characteristics from region to region, and have vesicular structure caused by various environmental factors. In this study, triaxial compressive strength tests were conducted for intact rocks sampled in northeastern onshore and offshore, southeastern offshore and northwestern offshore of Jeju Island. The estimated cohesion and internal friction angle from the results of triaxial compression tests were compared and analyzed with absorption, a parameter representing the vesicular properties of basalts in Jeju Island. As a result, it was found that the relationship between cohesion and absorption could be classified clearly, considering two different linear relationships in bulk specific gravity and absorption. As the absorption increases, the cohesion decreases exponentially. In addition, the internal friction angle decreases almost linearly with increasing in the absorption, regardless of the relationships in bulk specific gravity and absorption.
Keywords
Basalts in Jeju Island; Absorption; Bulk specific gravity; Mohr-Coulomb failure criterion; Cohesion; Internal friction angle;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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