EFFECT OF SOIL STRUCTURE ON IN-SITU FIELD VANE AND SEISMIC PIEZOCONE TESTS IN CHAMPLAIN CLAY

Mark Styler, Will McQueen, John Howie

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: In Situ Testing and Instrumentation I / Essais in situ et instrumentation I

ABSTRACT: In this paper we report on the interpretation of field vane shear testing at the National Canadian Geotechnical Research site in Gloucester, Ontario. Previously published investigations of the Champlain/Leda clay that underlies this site have observed cemented particle aggregates. We examined three different techniques for estimating the yield-stress ratio from field vane test results in the Champlain/Leda clay that underlies this site. We observed that all three vane interpretation methods provided similar results that were larger than laboratory reported values. We performed a seismic piezocone test and calculated the ratio of the shear stiffness to net tip resistance. For this soil, it appears that strength is a better indication of cemented particle bonds than stiffness.

RÉSUMÉ: Dans cet article, nous faisons état des interprétations suite aux essais in situ au scissomètre effectués au « Site No. 1 de recherche canadienne en géotechnique à Gloucester » en Ontario. Des études précédentes des dépôts argileux de la techniques pour estimer le rapport de la surconsolidation du cisaillement au scissomètre dans les dépôts argileux de la Mer de Champlain. Nous avons observé scissomètre sont similaires et ils étaient plus grands que ceux obtenus en laboratoire. Nous avons effectué des tests sismiques au piézocône et calculé le rapport de la rigidité au cisaillement avec la résistance de la pointe du cône. Pour ce type de sol, il semble que la force est un meilleur indicateur de la liaison des particules cimentées que la rigidité.

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Cite this article:
Mark Styler; Will McQueen; John Howie (2015) EFFECT OF SOIL STRUCTURE ON IN-SITU FIELD VANE AND SEISMIC PIEZOCONE TESTS IN CHAMPLAIN CLAY in GEO2015. Ottawa, Ontario: Canadian Geotechnical Society.

@article{606,author = Mark Styler; Will McQueen; John Howie,title = EFFECT OF SOIL STRUCTURE ON IN-SITU FIELD VANE AND SEISMIC PIEZOCONE TESTS IN CHAMPLAIN CLAY ,year = 2015}