Compressibility characteristics of a glaciolacustrine clayey deposit in Northern Ontario
Gholamreza Jarghi Araghi, Abouzar Sadrekarimi, Tony Sangiuliano, Jason Lee, Keli Shi
In the proceedings of: GeoRegina 2014: 67th Canadian Geotechnical ConferenceSession: Soil Mechanics
ABSTRACT: Soft glaciolacustrine clay deposits, which are commonly found in Ontario, cause highway embankment performance challenges related to settlement. There are different methods to manage embankment settlement issues. This paper describes the ground improvement method and the subsequent research related to the construction of highway bridge approach embankments located on the Highway 11 corridor in Northern Ontario, where approximately 10m high embankments were constructed on up to 35 m of soft clay deposit. One of the goals of this research is to evaluate the effect of soil improvement in terms of soil stress history and compressibility through quantitative comparison of soil properties before and after embankment construction. The research will also assess the secondary compression behaviour of the clay deposit. Based on incremental loading (IL) and constant rate of strain (CRS) consolidation test results, the coefficient of secondary compression tends to increase with time near preconsolidation pressure.
RÉSUMÉ: Dépôts d'argile glacio-lacustres gazeuses, qui sont généralement trouvés en Ontario, cause des problèmes de performances route de remblai liés à la colonisation. Il existe différentes méthodes pour gérer les problèmes de tassement du remblai. Cet article décrit la méthode d'amélioration des sols et la recherche subséquente liée à la construction de remblais d'approche de pont de l'autoroute situés sur le corridor de la route 11 dans le Nord de l'Ontario, où des berges hautes d'environ 10m ont été construits sur un maximum de 35 m du dépôt d'argile molle. L'un des objectifs de cette recherche est d'évaluer l'effet de l'amélioration des sols en termes de sols histoire des contraintes et la compressibilité en comparaison quantitative des propriétés du sol avant et après la construction du remblai. La recherche permettra également d'évaluer le comportement de compression secondaire du dépôt d'argile. Sur la base de chargement incrémentiel (IL) et vitesse de déformation constante (CRS) des résultats des tests de consolidation, le coefficient de compression secondaire a tendance à augmenter avec le temps proche de la pression de préconsolidation.
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Gholamreza Jarghi Araghi; Abouzar Sadrekarimi; Tony Sangiuliano; Jason Lee; Keli Shi (2014) Compressibility characteristics of a glaciolacustrine clayey deposit in Northern Ontario in GEO2014. Ottawa, Ontario: Canadian Geotechnical Society.
@article{GeoRegina14Paper406,
author = Gholamreza Jarghi Araghi; Abouzar Sadrekarimi; Tony Sangiuliano; Jason Lee; Keli Shi,
title = Compressibility characteristics of a glaciolacustrine clayey deposit in Northern Ontario,
year = 2014
}
title = Compressibility characteristics of a glaciolacustrine clayey deposit in Northern Ontario,
year = 2014
}