Date of Thesis

2010

Thesis Type

Masters Thesis (Bucknell Access Only)

Major

Civil and Environmental Engineering

First Advisor

Jeffrey C. Evans

Keywords

soil-bentonite, cyclic wetting and drying, hydraulic sustainability

Abstract

This study investigated the effect of cyclic wetting and drying on the backfill used in soil-bentonite (SB) cutoff walls. For this purpose, model SB vertical cutoff wall backfills were prepared comprising of a fine grained mortar sand and 2% bentonite (by total weight) and 4% bentonite (by total weight). Results of the study indicate that the volume change is influenced by the bentonite content, that is, the increase in volume change increased with increasing bentonite content.

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