Browsing Civil and Environmental Engineering by Title
Now showing items 491-510 of 867
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Investigating and Developing Fatigue-Healing Characterization of Asphalt Materials
(University of Waterloo, 2023-04-25)Canada’s aging highway network, consisting of over 1.1 million kilometres of roads, is a vital component in ensuring the safe and reliable day-to-day movement of people and goods. Flexible asphalt pavements experience ... -
Investigating Solutions for Self-Healing and Crack Mitigation of Flexible Pavement Materials
(University of Waterloo, 2023-01-23)In Canada, cracking is the most common deterioration mode of flexible pavements that occurs for different reasons such as traffic loading, and low temperature. Moreover, the propagation of cracks can be accelerated by the ... -
Investigating the Behaviour of Short-Span FRP-Reinforced Glulam Beams
(University of Waterloo, 2022-07-20)The broader availability of engineered wood products has generated a resurgence of wood used as a construction material over the past few decades. To further promote the use of timber, a solution aimed at increasing ... -
Investigating the Corrosion Behaviour of Carbon Black Steel Rebar in Ordinary and Limestone Cements With and Without Blast Furnace Slag
(University of Waterloo, 2022-09-30)Over the years, strange climate patterns have evolved over the globe, raising flags for concerns on the effects of global warming. Cement production contributes to 8% of the global carbon dioxide emissions. Without regards ... -
Investigating the effects of glass-fibre-reinforced polymer fabrics and bars on the flexural behaviour of sawn timber and glulam beams
(University of Waterloo, 2023-09-11)As climate change becomes an increasingly pressing issue worldwide, the buildings and construction industry remains to be a significant contributor to global carbon emissions. To address this, construction materials with ... -
Investigating the Enhancement of Biological Filtration with Capping Material Designs and Nutrient Amendments
(University of Waterloo, 2015-09-30)Biologically active filters, or biological filters, remove particles and harness the metabolic capacity of bacteria attached to filtration media, in the form of a biofilm, to metabolize biodegradable organic matter (BOM). ... -
Investigating the Role of Water Quality on the Galvanic Corrosion of Lead in Hard Drinking Water with a Focus on NOM
(University of Waterloo, 2020-05-25)Although the use of lead in water distribution systems is currently prohibited in Canada, old lead service lines, lead solder, and lead containing plumbing fixtures continue to be sources of lead in the tap water of many ... -
Investigation in Alternative Devices for Joint Load Transfer in Jointed Concrete Pavement
(University of Waterloo, 2013-01-25)Conventional construction of Jointed Plain Concrete Pavements (JPCP) in Canada consists of placing a round steel epoxy-coated dowel at the mid height of the pavement. Steel dowels reduce stepping at the joint to improve ... -
Investigation of Different Factors Affecting Asphalt Cement Ageing and Durability
(University of Waterloo, 2019-08-21)Asphalt cement is an organic material and, like any other organic material tends to react with atmospheric oxygen, thus changing its physical properties (more accurately rheological properties) gradually over time. Although ... -
Investigation of Environmental Impacts on Piezoelectric Weigh-In-Motion Sensing System
(University of Waterloo, 2011-09-30)Transportation by trucks plays a major role in North America’s economy. The growth of this industry will increase the loads on existing roads and highways and raises the possibility of overloaded vehicles, which causes ... -
Investigation of Microbial Electrochemical Cell (MEC) as a Sustainable Alternative for Synthesizing Hydrogen Peroxide (H2O2)
(University of Waterloo, 2015-01-28)Hydrogen peroxide (H2O2) is an environmentally-safe strong oxidant that has many practical applications. While H2O2 is capable of oxidizing a variety of contaminants, its end products are only H2O and O2. As a result, ... -
An Investigation of Nitrification Predictors and Factors in Two Full-Scale Drinking Water Distribution Systems
(University of Waterloo, 2012-01-10)The biologically-mediated process of nitrification can occur in chloraminated drinking water distribution systems. In this process, ammonia is oxidized to nitrite by ammonia-oxidizing bacteria (AOB) and archaea (AOA). In ... -
An Investigation of Non-stationary Nature of Environmental Data
(University of Waterloo, 2019-04-17)Several investigations have shown that the Earth's climate is experiencing change, as evident by rising global temperatures, receding ice sheets and reducing glacier sizes. There is also empirical observation supporting ... -
Investigation of Parameters Effecting Concrete Core Performance for Quality Control and Assurance
(University of Waterloo, 2019-04-23)The ever-evolving concrete construction industry has required stronger concrete, faster turnarounds, and better durability. To achieve this, the concrete mixtures have changed drastically, including a large amount of ... -
Investigation of Performance of a Submerged Anaerobic Membrane Bioreactor (AnMBR) Treating Meat Processing Wastewater
(University of Waterloo, 2014-11-10)Anaerobic membrane bioreactor (AnMBR) has grown popular as a means of sustainable biological treatment in the recent few decades due to less energy and space requirement, less sludge production, increased treatability, ... -
Investigation of Seismic Excitation as a Method for Flow Enhancement in Porous Media
(University of Waterloo, 2008-12-23)The concept of using dynamic excitation to enhance fluid flow in a porous medium began to arise in the mid-twentieth century. The initial spark of interest in the subject spurred numerous laboratory investigations throughout ... -
Investigation of the Effects of Coagulation on Membrane Filtration of Moving Bed Biofilm Reactor Effluent
(University of Waterloo, 2010-05-19)The combination of moving bed biofilm reactors and membrane bioreactors (MBBR-MR) can compensate for the drawbacks of both of these systems and further increase their acceptance and application in wastewater treatment ... -
Investigation of the Impact of Mixing Intensity on Dissolved Oxygen Half Velocity Constants in a Sidestream Deammonification Environment
(University of Waterloo, 2017-12-18)The liquid waste (centrate) from the dewatering stage in the solids treatment stream (sidestream) of a wastewater treatment plant is typically rich in ammonium. If this centrate is recycled to the wastewater treatment ... -
Investigation of the Impacts of Thermal Activated Sludge Pretreatment and Development of a Pretreatment Model
(University of Waterloo, 2012-12-03)Waste activated sludge (WAS) pretreatment technologies are typically evaluated in terms of the associated improvement in biogas and sludge production during digestion and post-digestion dewaterability. However, WAS ... -
Investigation of the Performance of an Anaerobic Membrane Bioreactor in the Treatment of Mixed Municipal Sludge Under Ambient, Mesophilic and Thermophilic Operating Conditions
(University of Waterloo, 2016-02-18)Anaerobic membrane bioreactors (AnMBRs) may provide a sustainable treatment technology for the digestion of mixed municipal sludge based on their ability to achieve elevated volatile solids (VS) conversion and a net ...