Experimental investigation of engineering behaviour of cement-mixed marine clay

Shuihan Li

In the proceedings of: GeoVancouver 2016: 69th Canadian Geotechnical Conference

Session: GROUND IMPROVEMENT - II

ABSTRACT: Soft and sensitive Champlain Sea clay (Leda clay) are commonly found along the St. Lawrence River in Southern Quebec and Southern Ontario. Most infrastructure developments on this kind of soil require ground improvement prior to their constructions. Deep soil mixing (DSM), a ground improvement technique popular in the US, Japan and Scandinavia, has distinct advantages which includes rapid strength increase, large applicable ground area, wide soil type usability, and low environmental impacts. In this study, the application of DSM to Champlain Sea clay was investigated through a laboratory testing program. Champlain Sea clay samples were collected from two sites near the City of Ottawa and tested with different binder types, dosages, and curing times. It was found that cement and slag/cement were both effective binders to efficiently treat Champlain Sea clay. The binder dosage, binder type, and curing duration are important factors which influence unconfined compressive strength (UCS) of the final sample. This paper presents an experimental investigation of the engineering behaviour of cement-treated Champlain Sea clay.

RÉSUMÉ: -Laurent dans le sud du qui est populaire aux États-environnementaux faibles. Dans cette étude, l'application de DSM à l'argile de la mer Champlain a été étudiée grâce à un programme d'essais en laboratoire. Des différents types d'échantillons de sol ont été prélevés et testés avec des différents types de liants, les posologies et les temps de durcissement. On a constaté que le ciment de laitier et / ou ciment étaient les deux efficaces pour traiter efficacement l'argile de la mer Champlain. Le dosage du liant, type de liant, et la durée de durcissement sont des facteurs importants qui influent sur la résistance à la compression uniaxiale (UCS) de l'échantillon final. Cet article présente une étude expérimentale du comportement mécanique du ciment-argile de la mer de Champlain traitée.

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Cite this article:
Shuihan Li (2016) Experimental investigation of engineering behaviour of cement-mixed marine clay in GEO2016. Ottawa, Ontario: Canadian Geotechnical Society.

@article{3838_0725070931,author = Shuihan Li,title = Experimental investigation of engineering behaviour of cement-mixed marine clay,year = 2016}