Influence of Ogallala groundwater and distilled water on the hydraulic conductivity of bentonite borehole plugs
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azu_td_hy_e9791_1987_593_sip1_w.pdf
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azu_td_hy_e9791_1987_593_sip1_w.pdf
Issue Date
1987Keywords
Hydrology.Bentonite -- Penetration resistance.
Groundwater flow.
Radioactive waste disposal in the ground.
Committee Chair
Daemen, Jaak J.K.Evans, Daniel D.
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The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.Abstract
A study investigating the effects of Ogallala groundwater on the hydraulic conductivity of bentonite borehole plugs has been conducted. Clay plugs constructed from bentonite tablets hydrated with unfiltered Ogallala groundwater exhibited reduced swelling and lower hydraulic conductivity than similar plugs constructed from tablets and distilled water. Results indicate hydraulic conductivities observed in the Ogallala groundwater plugs may be governed by factors including swelling characteristics and permeant colloidal matter clogging plug pore spaces. Constant pressure injection and transient pulse testing methods were used to determine hydraulic conductivity. In constant pressure injection tests, outflow volumes may require adjustment to account for consolidation processes.Type
Thesis-Reproduction (electronic)text
Degree Name
M.S.Degree Level
mastersDegree Program
Hydrology and Water ResourcesGraduate College