Journal
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
Volume 26, Issue 5, Pages 1694-1705Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19648189.2020.1728581
Keywords
Apparent cohesion; geocell; geosynthetics; mechanical behaviour; undrained triaxial test
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This paper presents an experimental study on the improvement of shear strength in undrained conditions of geocell reinforced loose sand. The results show that the height of geocells and initial confining pressure have significant effects on the shear strength of the reinforced sand.
This paper presents an experimental thorough study on geocell reinforced loose sand (Dr = 25%), focusing on the improvement of the shear strength in undrained conditions. The experimental program includes a series of undrained compressive tests (CU) performed on loose sand samples with and without reinforcement. The experimental tests are performed for various geocell height (Hg = 15, 25 and 35 mm) and at different level of effective confining pressure (sigma'(c) = 50, 100 and 200 kPa). The obtained results show a significant effect of geocells height and initial confining pressure on the shear strength of the reinforced sand. The apparent cohesion of the reinforced soil increases linearly with the axial strain while the friction angle is rather constant and slightly dependent on the sample deformation.
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