Browsing Civil and Environmental Engineering by Title
Now showing items 608-627 of 880
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Numerical Analysis of Debonding Mechanisms of Externally Bonded FRP Reinforcement in RC Beams
(University of Waterloo, 2018-04-16)There is an urgent need to develop economic and efficient methods to repair and strengthen existing reinforced concrete structures. This demand is motivated by several factors including the aging of concrete structures, ... -
Numerical considerations for the simulation of proppant transport through fractures
(Elsevier, 2019-09)Injection of a proppant slurry (fluid mixed with granular material) into a reservoir to keep fractures open is a common procedure in hydraulic fracturing treatments. This article presents the numerical methodology for ... -
Numerical Evaluation of Classification Techniques for Flaw Detection
(University of Waterloo, 2007-09-24)Nondestructive testing is used extensively throughout the industry for quality assessment and detection of defects in engineering materials. The range and variety of anomalies is enormous and critical assessment of their ... -
A Numerical Interpretation Model for the Dipole Flow and Reactive Tracer Test
(University of Waterloo, 2007-01-12)In order to protect public health and the natural environment, regulatory agencies such as the U.S. Environmental Protection Agency (USEPA) and the Ontario Ministry of the Environment (MOE) have developed a variety of ... -
Numerical Investigation of the Effects of Shrinkage and Thermal Loading on the Behaviour of Misaligned Dowels in Jointed Concrete Pavement
(University of Waterloo, 2010-02-18)Dowel bars in jointed plain concrete pavement (JPCP) have the important function of transferring wheel loads from one slab to the other, hence ensuring that the deflections on each side of the joint are kept almost equal. ... -
Numerical Modeling of Nonlinear Problems in Hydraulic Fracturing: Fracture Propagation, Proppant Transport, and Shear Dilation
(University of Waterloo, 2020-05-05)Hydraulic fracturing is a stimulation technique in which fluid is injected at high pressure into low-permeability reservoirs to create a fracture network for enhanced production of oil and gas. It is the primary purpose ... -
Numerical Modeling of Permafrost in Heterogeneous Media
(University of Waterloo, 2020-03-05)Interest in numerical modeling of permafrost has increased over the past decade due to accelerating rates of permafrost thaw. Discontinuous permafrost regions are particularly susceptible to climate change since small ... -
Numerical Modelling of Reinforced Concrete Walls Encased in Polyvinyl Chloride Stay-In-Place Formwork
(University of Waterloo, 2015-09-25)In structurally participating formworks, a new forming technique for reinforced concrete, referred to as stay-in-place formwork has recently emerged as a viable technique. This permanent new formwork system simplifies the ... -
Numerical Simulations of Undrained Granular Media
(University of Waterloo, 2004)The objective of the present study was to develop a fluid flow-coupled distinct element model capable of capturing the undrained behaviour of granular soils by considering fundamental physical mechanisms that involve fluid ... -
Online Monitoring Framework for Pressure Transient Detection in Water Distribution Networks
(University of Waterloo, 2019-04-23)Access to potable drinking water is a necessity and basic human right. Most North Americans obtain treated water through water distribution networks, an essential part of municipal infrastructure that is subject to decay ... -
Operational maps between molecular properties and environmental stress cracking resistance (ESCR)
(Wiley, 2019-01-20)Environmental stress cracking (ESC) is one of the main failure mechanisms involved in polymer fractures. This paper focusses on the environmental stress cracking resistance (ESCR) of polyethylene (PE) in which ESC occurs ... -
Operational Robustness of Drinking Water Treatment Plants with Respect to Turbidity Representing Normal, Severe and Unprecedented Weather Events
(University of Waterloo, 2022-06-16)Drinking water treatment plants (DWTPs) are required to supply safe drinking water continuously to the consumers to protect public health and sanitation. The adverse effects of climate change can influence raw water quality, ... -
Optimal Packing of Irregular 3D Objects For Transportation and Disposal
(University of Waterloo, 2022-01-05)This research developed algorithms, platforms, and workflows that can optimize the packing of 3D irregular objects while guaranteeing an acceptable processing time for real-life problems, including but not limited to nuclear ... -
Optimization of the Use of Post-Industrial Recycled Multilayer Plastic Packaging (MPP) as Asphalt Modifier
(University of Waterloo, 2023-04-27)The quality of road infrastructure significantly impacts the safety and comfort of road users and the country's economy. In Canada, 15% of roads are rated poor or very poor, with 108,000 km in poor condition, costing drivers ... -
Optimizing Airport Runway Performance by Managing Pavement Infrastructure
(University of Waterloo, 2012-08-29)The research described herein is composed of four major areas of practice. It examines the overall performance of runways and provides tools designed to improve current runway operations and management with particular ... -
Optimizing Solvent Extraction of PCBs from Soil
(University of Waterloo, 2009-08-04)Polychlorinated biphenyls (PCBs) are carcinogenic persistent contaminants. Although their manufacturing in North America ceased in the late 1970s, their high heat resistance made their use widespread over their production ... -
Optimizing the Performance of Asphalt Mixes with High Reclaimed Asphalt Pavement Content Using Rejuvenators
(University of Waterloo, 2023-01-23)Reusing reclaimed asphalt pavement (a.k.a., RAP) has become a routine in the production of asphalt paving materials. Theoretically, RAP is a hundred percent recyclable material since its main components are high-quality, ... -
Optimum Deicing and Anti-icing for Snow and Ice Control of Parking Lots and Sidewalks
(University of Waterloo, 2015-01-06)Snow and ice cause pavement surfaces to become slippery and unsafe for both foot and vehicular traffic. To alleviate the hazards of pedestrians slipping and vehicular accidents, various forms of maintenance operations such ... -
Paleoevolution of Pore Fluids in Glaciated Geologic Settings
(University of Waterloo, 2009-06-17)Nuclear power generation is being regarded as a solution to ever increasing demand for electricity, and concerns over global warming and climate change due to the use of fossil fuels. Although nuclear power generation is ... -
Parameter Estimation and Uncertainty Analysis of Contaminant First Arrival Times at Household Drinking Water Wells
(University of Waterloo, 2007-01-25)Exposure assessment, which is an investigation of the extent of human exposure to a specific contaminant, must include estimates of the duration and frequency of exposure. For a groundwater system, the duration of exposure ...