Performance of Road Embankment on Cement Stabilized Soft Clay

Ramy Saadeldin, Manal A. Salem, Hani A. Lotfi

In the proceedings of: GEO2011: 64th Canadian Geotechnical Conference, 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering

Session: Ground Improvement/Remediation

ABSTRACT: Cement stabilization of soft clay has been growingly used as a ground improvement method. This paper evaluates the performance of a road embankment constructed on cement-stabilized soft clay (CSC). The undrained shear strength of the soft clay was experimentally determined before and after stabilization with cement. The results of the experimental work were used to simulate the behavior of the foundation soil under the road embankment using a 2-D finite element model. The foundation soil consisted of two layers: CSC having a variable thickness ranging from 1 to 5m, followed by soft clay layer extending to 15m below ground surface. The performance of the embankment founded on CSC was compared to that obtained if the CSC was replaced with compacted sand fill. Cement stabilization enhanced the performance of the embankment with respect to safety against shear failure more than sand soil replacement.

RÉSUMÉ: sols. Cet article évalue la performance d'un remblai de la route construit sur La résistance au cisaillement de l'argile molle a été déterminée expérimentalement, avant et après la stabilisation avec le ciment. Les résultats des travaux expérimentaux ont été utilisés pour simuler le comportement du sol de fondation sous le remblai de la route en utilisant un modèle à éléments finis 2-D. Le sol de fondation composé de deux couches: CSC ayant une épaisseur variable allant de 1 à 5 m, suivie par la couche d'argile molle s'étendant jusqu'à 15 m sous la surface du sol. La performance de la digue fondée sur le CSC a été comparée à celle obtenue si le CSC a été remplacé par un remblai de sable compacté. La stabilisation au ciment a amélioré la performance de la digue en matière de sécurité contre la rupture par cisaillement plus que le remplacement du sol de sable.

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Cite this article:
Ramy Saadeldin; Manal A. Salem; Hani A. Lotfi (2011) Performance of Road Embankment on Cement Stabilized Soft Clay in GEO2011. Ottawa, Ontario: Canadian Geotechnical Society.

@article{GEO11Paper259,author = Ramy Saadeldin; Manal A. Salem; Hani A. Lotfi ,title = Performance of Road Embankment on Cement Stabilized Soft Clay ,year = 2011}