Effects of direct shear box dimensions on shear strength parameters of geogrid-reinforced sand

Hamed Mirzaeifar, Ashkan Abouzar, Mahmood Reza Abdi

In the proceedings of: GeoMontréal 2013: 66th Canadian Geotechnical Conference; 11th joint with IAH-CNC

Session: Geosynthetics - Wall Reinforcement

ABSTRACT: Direct shear test is one of the simplest and most economical tests to measure shear strength parameters of dry or saturated sandy soil as well as soil-geogrid interaction parameters. In the current study the effects of specimen size and density on soil-investigated. Results show that increasing specimen size of unreinforced sand with constant density results in a decrease in angle of friction which has been attributed to reduced confinement effect using larger shear boxes. The rate of reduction in angle of friction is increased by increasing soil density and using geogrid as reinforcement.

RÉSUMÉ: résistance au cisaillement des sols sablonneux secs ou saturés ainsi que les paramètres d'interaction entre le sol et la géogrille. Dans la présente étude, les effets de la taille et de la densité de l'échantillon sur les paramètres d'interaction sol-géogrille en utilisant des boîtes de cisaillement de taille 6x6 cm, 10x10 cm et 30x30 cm ont été étudiés. Les résultats montrent que la taille croissante du sable non renforcé de densité constante entraîne la diminution de l'angle de réduction de l'angle de friction est augmenté par la densité croissante du sol et en utilisant la géogrille comme renfort.

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Cite this article:
Hamed Mirzaeifar; Ashkan Abouzar; Mahmood Reza Abdi (2013) Effects of direct shear box dimensions on shear strength parameters of geogrid-reinforced sand in GEO2013. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GeoMon2013Paper776,author = Hamed Mirzaeifar; Ashkan Abouzar; Mahmood Reza Abdi,title = Effects of direct shear box dimensions on shear strength parameters of geogrid-reinforced sand ,year = 2013}