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Geotechnical Characteristics of the Ulleung Basin Sediments, East Sea (2) - Microstructure, Mineralogy, and Strength Parameters  

Kim, Youngmoon (Scool of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jongsub (Scool of Civil, Environmental and Architectural Engineering, Korea University)
Lee, Jooyong (Korea Institute of Geoscience and Mineral Resources)
Lee, Changho (Scool of Civil, Environmental and Architectural Engineering, Korea University)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.5, 2013 , pp. 49-56 More about this Journal
Abstract
The necessity of exploration in deep sea increases to develop the natural resources. The deep marine sediments, which were recovered from the hydrate occurrence regions during the Ulleung Basin Gas Hydrate Expedition 2 (UBGH2), East Sea, Korea in 2010, are explored to obtain the geotechnical characteristics and strength parameters. The index properties of the specimens including the atterberg limits, specific surface, and particle size distribution are measured and compared with the previous studies. X-ray diffraction, scanning electron microscope, and X-ray energy dispersive spectroscopy are conducted to analyze the clay mineralogy, chemical composition, and microstructure of the sediments. Strength parameters and shear wave velocities are measured with the axial strain by using an instrumented triaxial device. The strength parameters estimated by empirical equations are compared with the experimental results.
Keywords
Atterberg limits; X-ray diffraction; Scanning electron microscope; X-ray energy dispersive spectroscopy; Triaxial test; Strength parameter; Shear wave velocity;
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