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Evaluation of Interface Shear Properties Between Geosynthetics and Soils Through Inclined Board Tests  

서민우 (서울대학교 지구환경시스템공학부)
신준수 (서울대학교 지구환경시스템공학부)
박준범 (서울대학교 지구환경시스템공학부)
박인준 (한서대학교 토목공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.6, 2003 , pp. 285-298 More about this Journal
Abstract
Shear properies of geosynthetic/geosynthetic and geosynthetic/soil interfaces which are widely met in landfill sites were evaluated from the inclined board tests. The inclined board testing apparatus is known to reproduce the shear behavior on the low normal stress most accurately. In this study, the friction angle of each interface was estimated and the tensile force mobilized at the geosynthetic was measured as well. The test results showed that the friction angle of each interface and the tensile force of the geosynthetics depended on the amount of normal stress, the type of the geosynthetics used, and the combinations of geosynthetics and soils. In addition, the sand/geotextile/geomembrane interface system was simulated in this study, and it was observed that the tensile force developed at the geomembrane decreased due to the protection effect of the geotextile located above the geomembrane. The test results of this research was compared with those of direct shear tests published, too. Finally, by comparing the measured tensile force of the geosynthetics when the initial displacement of the box occurs, when the slope is called as the critical slope, with suggested analytic solution, the accuracy of analytic solution and the applicability to design were identified.
Keywords
Direct shear test; Geosynthetic; Inclined board test; Interface shear strength; Landfill;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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