Browsing Department of Civil Engineering Graduate Theses by Title
Now showing items 181-200 of 290
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Mathematical Modelling of DNAPL Source Zone Remediation
(2009-05-21)Mathematical modelling was utilized to evaluate trichloroethylene (TCE) and tetrachloroethylene (PCE) dense non-aqueous phase liquid (DNAPL) source zone remediation in the subsurface environment. Semi-analytical solutions ... -
A Methodology for Environmental Protection of Ontario Watercourses With Respect to the Permit to Take Water Program
(2007-10-23)The Ontario Water Resources Act requires a Permit To Take Water (PTTW) for withdrawals greater than 50,000 L/day. The permitting process includes a requirement to minimize the environmental effects of the withdrawal, but ... -
Mobilization of Non-aqueous Phase Liquid by Flowing Gas Bubbles in Porous Media
Gas bubbles can significantly affect contaminant transport in both sediments and groundwater systems. In some circumstances, gas bubble mobilization can result in the transport of non-aqueous phase liquids (NAPLs) as ... -
Modeling Trihalomethane Formation in Drinking Water With Application to Risk-Based Decision-Making
(2009-02-11)A model-based methodology for risk-based decision-making of water treatment and disinfection strategies that deal with the management of trihalomethanes (THMs) has been developed. Trihalomethanes (THMs) are by-products of ... -
Modelling Methane Emissions from Arctic Lakes
Climate change in the Arctic is moving at a greater rate than the rest of the world, and the urgency of characterizing greenhouse gas emissions from water bodies located in high latitudes has become a subject of intensive ... -
Modelling MSW Leachate Characteristics and Clogging
(2012-04-26)A numerical model (BioClog) is developed to examine changes in key municipal solid waste (MSW) leachate characteristics and the porosity of porous media (clogging) as the leachate passes through the drainage layer of a ... -
Modelling the Impacts of Climate Change on the Hydrodynamics and Biogeochemistry of Lake Simcoe, Hamilton Harbour and the Bay of Quinte
(2014-10-03)This thesis focuses on 3 Ontario water bodies (Hamilton Harbour, the Bay of Quinte and Lake Simcoe), which are vital for economic and recreational activities, yet are threatened by eutrophication, which leads to low dissolved ... -
Modelling Waves and Currents in Northeastern Lake Ontario to Assess the Impacts of a Proposed Offshore Wind Farm
(2013-10-02)A spectral wave model (SWAN) coupled with a depth averaged hydrodynamic model (Delft3D) was used to understand the wave and flow dynamics of the Kingston Basin of Lake Ontario during large winter storm events. This model ... -
Moisture Uptake and Loss of Geosynthetic Clay Liners from a Silty Sand Subgrade Under Isothermal Hydration and Thermal Cycles
Geosynthetic clay liner (GCL) performance is said to rely on adequate hydration from the subgrade which is controlled by factors such as the properties of the GCL, subgrade and permeant, and their exposure to solar radiation. ... -
Moment Connections of Concrete-Filled Fibre Reinforced Polymer Tubes to Reinforced Concrete Footings
(2010-01-29)Fiber reinforced polymers (FRPs) are increasingly being accepted in structural engineering applications. One promising system involves the use of concrete-filled FRP tubes (CFFTs) as bridge piers, columns or piles. While ... -
Monitoring of Dynamic Bridge Behaviour Using Digital Image Correlation
(2016-08-06)Bridges are a critical part of North America’s transportation network that need to be assessed frequently to inform bridge management decision making. Visual inspections are usually implemented for this purpose, during ... -
Nature and time-scale of bed morphological adjustments towards equilibrium in meandering streams: an experimental study
(2012-01-30)This thesis concerns the nature and time-scale of bed morphological adjustments towards equilibrium in alluvial meandering streams. Following the prevailing approach, the stream centrelines are assumed to follow sine-generated ... -
New Sensing Techniques for Improved Assessment of Rail Infrastructure
As demand grows for rail transportation, so too does the stress on Canada’s rail infrastructure, and improved monitoring technologies are needed to prevent track failure and assist in the bridge rehabilitation process. ... -
Non-hydrostatic modelling of nearshore wave transformation and breaking over varying beach morphology
(2015-12-10)A non-hydrostatic phase-resolving wave model is used to investigate wave transformation and energy dissipation due to wave breaking over different small and large scale morphological features. Simulations of waves in the ... -
Nonlinear finite element study of deteriorated rigid sewers including the influence of erosion voids
(2007-10-01)The service life of rigid sewer pipes is often controlled by joint integrity. Leaking joints can cause ingress of water and develop voids where surrounding soil has eroded. The influence of soil voids on the stability of ... -
Nonlinear soil-structure interaction for buried pressure pipes under differential ground motion
(2016-09-28)Pipelines extend thousands of kilometers across wide geographic areas as a network to provide essential services for modern life. It is inevitable that pipelines must pass through unfavorable ground conditions, which are ... -
Novel Sensors for Improving Reinforced Concrete Design and Assessment
The rate that reinforced concrete (RC) infrastructure is being constructed around the world continues to increase, placing significant stress on the environment. Thus, it is important that any inefficiencies in RC design ... -
Numerical Modeling of Thermal Enhancement of In Situ Chemical Oxidation (ISCO) and Enhanced In Situ Bioremediation (EISB)
(2014-02-11)A numerical model was utilized to assess the effects of elevated temperature on the application of in situ chemical oxidation (ISCO) and enhanced in situ bioremediation (EISB) for the subsurface remediation of trichloroethene ... -
Numerical Modelling of Methane Emissions From Peatlands
Peatlands could play a significant role in global warming for two reasons: 1) peatlands release methane (CH4), which is a very potent greenhouse gas estimated to be responsible for a quarter of the temperature rise the ... -
Numerical Study and Load and Resistance Factor Design (LRFD) Calibration for Reinforced Soil Retaining Walls
(2010-01-29)Load and resistance factor design (LRFD) (often called limit states design (LSD)) has been mandated in the AASHTO Bridge Design Specifications and will be adopted in future editions of Canadian Highway Bridge Design Code ...