TY - GEN
T1 - Enhancement in the interface shear resistance achieved by a novel geogrid with in-plane drainage
AU - O'Kelly, Brendan C.
AU - Naughton, Patrick J.
PY - 2008
Y1 - 2008
N2 - The enhancement in the interface shear strength achieved in the short-term by a novel geogrid, which combines both reinforcement and in-plane drainage functions, was studied. Marginal fill material (wet gravelly clay) was standard Proctor compacted to achieve 92% of its maximum dry unit weight and tested in the large shearbox apparatus under consolidated-undrained conditions. Overall, the interface shear resistance (τg-g) values mobilized for the novel geogrid were similar to the undrained shear strength of the test soil itself. In contrast, the τg-g values mobilized for a conventional geogrid, which had similar physical and tensile strength properties, were between only 82 and 85% of the undrained shear strength of the test soil. The benefit is that the increase in the interface friction angle (achieved by in-place drainage along the novel geogrid) will facilitate the use of some marginal fills, which may already be readily available onsite, in the construction of earth structures. Copyright ASCE 2008.
AB - The enhancement in the interface shear strength achieved in the short-term by a novel geogrid, which combines both reinforcement and in-plane drainage functions, was studied. Marginal fill material (wet gravelly clay) was standard Proctor compacted to achieve 92% of its maximum dry unit weight and tested in the large shearbox apparatus under consolidated-undrained conditions. Overall, the interface shear resistance (τg-g) values mobilized for the novel geogrid were similar to the undrained shear strength of the test soil itself. In contrast, the τg-g values mobilized for a conventional geogrid, which had similar physical and tensile strength properties, were between only 82 and 85% of the undrained shear strength of the test soil. The benefit is that the increase in the interface friction angle (achieved by in-place drainage along the novel geogrid) will facilitate the use of some marginal fills, which may already be readily available onsite, in the construction of earth structures. Copyright ASCE 2008.
UR - http://www.scopus.com/inward/record.url?scp=66549122394&partnerID=8YFLogxK
U2 - 10.1061/40971(310)92
DO - 10.1061/40971(310)92
M3 - Conference contribution
AN - SCOPUS:66549122394
SN - 9780784409718
T3 - Geotechnical Special Publication
SP - 740
EP - 747
BT - Proceedings of session of GeoCongress 2008 - GeoCongress 2008
T2 - GeoCongress 2008: Geosustainability and Geohazard Mitigation
Y2 - 9 March 2008 through 12 March 2008
ER -