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http://dx.doi.org/10.7843/kgs.2017.33.5.5

Constant Rate of Strain Consolidation Test with Rowe Cell on the Clay with Sand Seam  

Kim, Jae-Hong (Infrastructure Technology Center, KWIE)
Kim, Chan-Kee (Dept. of Civil Engrg., Daejin Univ.)
Kim, Tae-Hyung (Dept. of Civil Engrg., Korea Maritime and Ocean Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.33, no.5, 2017 , pp. 5-13 More about this Journal
Abstract
The sand layer deposited in clay is called a sand seam, which is formed by inflow of sands due to river flooding or slope failure in the middle of sinking and sediment of clay. When the sand seam exists in clay layer, the drainage direction changes from one way to both ways, and the time of consolidation may be reduced. However, it is not clearly proved due to lack of studies of sand seam and currently is not reflected in the design of soft soil improvement. As a fundamental study about sand seam, the oedometer tests and constant rate of strain tests with Rowe cell were conducted on clay specimens with sand seam. For tests, a frozen method was specially designed for making the sand seam. It was concluded that the test results showed the sand seam affects the coefficient of consolidation of clay. If the thickness of sand seam exceeds 0.05 times of specimen height, the sand seam works as drainage layer of pore water horizontally as well as vertically, and consequently the consolidation is accelerated.
Keywords
Sand seam; Rowe cell; Constant rate of strain consolidation; Coefficient of consolidation;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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