Abstract
This paper describes a detailed geotechnical site investigation carried out to study the static and dynamic properties of a post-glacial Goldthwait Sea sensitive clay deposit. The focus is on the evaluation of the small-strain shear modulus of the sensitive clay. The site is located on the North Shore of the St-Lawrence Gulf (Province of Quebec) and it is selected as it is the location of a major landslide triggered by rock blasting operations in 2009. The investigations involved both in-situ and laboratory tests (resonant column and bender element testing). The laboratory tests were carried out on high quality large diameter clay samples from three different depths. The objective of this paper is to compare the laboratory small-strain shear modulus obtained with resonant column and bender elements with the small-strain shear modulus obtained in the field using the seismic piezocone (SCPTu) and ambient vibrations.
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Acknowledgements
The authors would like to thank the Ministère des Transports du Québec, Ministère de la Sécurité publique and Natural Sciences and Engineering Research Council of Canada (NSERC) for their financial support. Didier Perret (commission géologique du Canada) is also thanked for his help with microtremor ambient vibrations measurements. Dr. Samson Degago at the Norwegian Public Road Administration (NPRA) is acknowledged for reviewing this paper.
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Bouchard, S., Ali, H., LeBoeuf, D., Leroueil, S., Cascante, G. (2017). Dynamic Properties of a Sensitive Clay Deposit. In: Thakur, V., L'Heureux, JS., Locat, A. (eds) Landslides in Sensitive Clays. Advances in Natural and Technological Hazards Research, vol 46. Springer, Cham. https://doi.org/10.1007/978-3-319-56487-6_15
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DOI: https://doi.org/10.1007/978-3-319-56487-6_15
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