Rheological and desaturation characteristics of a clay slurry
Shahid Azam, Mavinakere E. Raghunandan
In the proceedings of: GeoManitoba 2012: 65th Canadian Geotechnical ConferenceSession: T1A - Soil Mechanics II
ABSTRACT: Several mining, geotechnical, and environmental related activities have to work with dilute slurries such as mine tailings, municipal sludges, dredged materials, and slurry trenches. These slurries are quite challenging during transportation and subsequent deposition. A clear understanding of their engineering behavior is pivotal at the onset of any project involving slurries. The main objective of this paper is to investigate the rheological and desaturation characteristics of clay slurry. The laboratory test results indicate a moderate water adsorption capacity for the clay as shown by the consistency limits (wl = 74% and wp = 32%). The SWCC for slurry and natural clay tend towards each other to meet at water content close to the plastic limit irrespective of the initial void ratio. The inflexion point in the yield stress versus solids content plot was found to occur at 54% solids content (corresponding to w = 1.15 wl).
RÉSUMÉ: Plusieurs mines, de la géotechnique, l'environnement et les activités connexes doivent travailler avec diluées boues telles que les résidus miniers, les boues municipales, les matériaux de dragage et tranchées de boue. Ces boues sont assez difficile pendant le transport et le dépôt subséquent. Une compréhension claire de leur comportement mécanique est essentielle dès le début de tout projet impliquant des boues. L'objectif principal de cet article est d'étudier les caractéristiques rhéologiques et la désaturation de boue argileuse. Les résultats des tests de laboratoire indiquent une eau modérée capacité d'adsorption de l'argile comme le montrent les limites de consistance (wl = 74% et wp = 32%). La SWCC pour le lisier et de l'argile naturelle tendent vers l'autre pour répondre à la teneur en eau proche de la limite de plasticité, indépendamment de l'indice de vide initial. Le point d'inflexion dans la limite d'élasticité par rapport teneur en matières solides complot a été découvert à produire 54% teneur en matières solides (correspondant à w = 1,15 WL).
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Shahid Azam; Mavinakere E. Raghunandan (2012) Rheological and desaturation characteristics of a clay slurry in GEO2012. Ottawa, Ontario: Canadian Geotechnical Society.
@article{Paper306,
author = Shahid Azam; Mavinakere E. Raghunandan,
title = Rheological and desaturation characteristics of a clay slurry,
year = 2012
}
title = Rheological and desaturation characteristics of a clay slurry,
year = 2012
}