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http://dx.doi.org/10.7843/kgs.2009.25.11.105

Evaluation of Cementation Effect of Jeju Coastal Sediments  

Lee, Moon-Joo (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Kim, Jae-Jeong (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Shim, Jai-Beom (Samsung C&T Corporation)
Lim, Chai-Geun (RGEO Engrg. & Construction)
Lee, Woo-Jin (School of Civil, Environmental, and Architectural Engrg., Korea Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.25, no.11, 2009 , pp. 105-115 More about this Journal
Abstract
The Jeju sand was sampled from the beach in Jeju Island and its basic properties were analyzed. The cementation effect of Jeju coastal sediments was evaluated from in-situ tests such as SPT, CPT, and the Suspension-PS test. It was shown from test results that the Jeju sand has high extreme void ratios due to the angularity of grains and the intra-particle voids of hollow particles, similar to typical calcareous sands. From cone penetration test in the calibration chamber, it was found that the cone resistance($q_c$)-relative density($D_R$)-vertical effective stress(${\sigma}_v) relation of Jeju sand almost matches that of high compressible quartz sand. However, the $q_C-D_R-{\sigma}_v correlation suggested for uncemented Jeju sand overestimates the relative density of coastal sediments of Jeju Island due to the cementation effect. From the analysis of the relation of cone resistance, N value, and small strain shear modulus measured in-situ, it seems reasonable to assume that the coastal sediment of Jeju Island is a naturally cemented one.
Keywords
Calcareous sand; Cementation; Cone resistance; Jeju sand; N value; Small strain shear modulus;
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Times Cited By KSCI : 3  (Citation Analysis)
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