Geophysical and geotechnical characterization of a sensitive clay deposit in Brownsburg, Québec

Bélanger, Karine; Locat, Ariane; Fortier, Richard; Demers, Denis

Publication :
Geophysical and geotechnical characterization of a sensitive clay deposit in Brownsburg, Québec

bul.description.provenance	nag spb	fr
bul.rights.dateAccepPubl	2017-05-24	fr
bul.rights.periodeEmbargo	24M	fr
dc.contributor.author	Bélanger, Karine
dc.contributor.author	Locat, Ariane
dc.contributor.author	Fortier, Richard
dc.contributor.author	Demers, Denis
dc.coverage.spatial	Québec (Province) -- Brownsburg-Chatham	fr
dc.date.accessioned	2019-03-28T19:56:19Z
dc.date.available	2019-05-24
dc.date.issued	2017-05-24
dc.description.abstract	The results of a geophysical and geotechnical investigation in a sensitive clay deposit affected by numerous landslide scars in Vases Creek Valley near Brownsburg, Quebec, Canada are presented herein. The main objective of this investigation was to assess the suitability of electrical resistivity measurements in marine clay deposits for mapping out areas prone to flowslides. In addition to a 1.6 km-long electrical resistivity tomography (ERT) carried out perpendicular to the axis of the Vases Creek Valley, six piezocone penetration tests and five boreholes with sampling were also performed along the geophysical survey line. Moreover, standard geotechnical parameters and pore water salinity, as well as electrical resistivity of undisturbed clay samples were measured in the laboratory. According to the correlations found between the remoulded shear strength, the pore water salinity and the electrical resistivity, clay samples with salinity below 6.2 g/l are characterized by remoulded shear strength below 1 kPa and electrical resistivity above 2.8 and 10 m measured respectively in the field and in the laboratory. In such conditions, sensitive clay deposits can be prone to flowslides if all other criteria are also met. Based on this resistivity limit value, only one small area of nonsensitive clay was identified in the interpretative stratigraphic cross-section assessed from the field investigation. Otherwise, the deposit is entirely composed of sensitive clay. The ERT is a promising geophysical tool for the delineation of areas prone to large landslides in eastern Canada	en
dc.format.extent	Pages : 77-86	fr
dc.identifier.ariane	http://ariane.ulaval.ca/cgi-bin/recherche.cgi?qu=a2652666	fr
dc.identifier.doi	10.1007%2F978-3-319-56487-6_7	fr
dc.identifier.uri	http://hdl.handle.net/20.500.11794/34148
dc.language	eng	fr
dc.publisher	Springer	fr
dc.relation.ispartof	Landslides in sensitive clay	fr
dc.rights	http://purl.org/coar/access_right/c_abf2
dc.subject.rvm	Glissements de terrain	fr
dc.subject.rvm	Argile	fr
dc.subject.rvm	Géophysique	fr
dc.subject.rvm	Géologie appliquée	fr
dc.subject.rvm	Mécanique des sols	fr
dc.title	Geophysical and geotechnical characterization of a sensitive clay deposit in Brownsburg, Québec	fr
dc.type	chapitre d'ouvrage
dc.type.legacy	COAR1_1::Texte::Livre::Chapitre d'ouvrage	fr
dcterms.publisher.location	Caham, Suisse	fr
dspace.accessstatus.time	2023-05-26 18:25:45
dspace.entity.type	Publication
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rioxxterms.project.funder-name	Fonds Vert Québec	fr
rioxxterms.version	Accepted Manuscript (AM)	fr
rioxxterms.version-of-record	https://doi.org/10.1007/978-3-319-56487-6_7	fr