Browsing Civil and Environmental Engineering by Title
Now showing items 509-528 of 880
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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 ... -
An investigation of UV disinfection performance under the influence of turbidity & particulates for drinking water applications
(University of Waterloo, 2005)UV disinfection performance was investigated under the influence of representative particle sources, including wastewater particles from secondary effluent in a wastewater treatment plant, river particles from surface ... -
Investigation of Visualization Needs for Vertical Repetitive Projects
(University of Waterloo, 2018-04-27)Repetitive construction projects, particularly high-rise buildings, are complex projects that suffer from cost overruns and delays. For these projects, efficient repetitive scheduling becomes necessary. Repetitive scheduling, ... -
Iron Nanoparticles for In Situ Chemical Oxidation
(University of Waterloo, 2013-08-09)Recently, metal nanoparticles have attracted the attention of researchers in several fields of study due to their high surface area and other unique properties. Using metal nanoparticles as a component of an in situ ... -
Jerk as a Method of Identifying Physical Fatigue and Skill Level in Construction Work
(University of Waterloo, 2019-04-26)Researchers have shown that physically demanding work, characterized by forceful exertions, repetition, and prolonged duration can result in fatigue. Physical fatigue has been identified as a risk factor for both acute and ... -
Large Scale Testing and Modelling of Reinforced Concrete Flat Plate Systems in Seismic Areas
(University of Waterloo, 2015-11-12)The focus of this research is on developing new punching shear retrofit techniques for slab-column connections to improve the seismic response of flat-plate systems. Previous tests have shown the effectiveness of using ... -
Large-scale Asset Renewal Optimization: GAs + Segmentation versus Advanced Mathematical Tools
(University of Waterloo, 2011-09-30)Capital renewal is an essential decision in sustaining the serviceability of infrastructure. Effectively allocating limited renewal funds amongst numerous asset components represents a large-scale combinatorial optimization ... -
Learning-based Image Scale Estimation for Quantitative Visual Inspection of Civil Structures
(University of Waterloo, 2021-02-25)The number of assets of civil infrastructure (e.g., bridges or roads) have been increasing to meet the demands of growing populations around the world. However, they degrade over time due to environmental factors and must ... -
Leveraging Deep Learning and Advanced Statistical Methods for Investigating the Fate and Transport of Microplastics in a Waste Water Treatment Plant
(University of Waterloo, 2023-07-26)Microplastics (MPs), defined as plastic particulates smaller than 5mm, pose significant environmental concerns due to their widespread distribution, adverse ecological impacts, and potential human health implications. The ... -
Life cycle sustainability assessment of asset management plans for municipal wastewater systems
(University of Waterloo, 2019-01-24)Municipal governments have the responsibility to provide safe drinking water and handle polluted water to protect their citizen’s health and safety. Maintaining water infrastructure systems, including wastewater collection ... -
The Life-Cycle Assessment of a Single-Storey Retail Building in Canada
(University of Waterloo, 2010-08-26)In North America, the operation of buildings accounts for approximately one third of the total energy use and greenhouse gas emissions annually. Office buildings are responsible for roughly 35% of the total commercial/in ... -
Lightweight Cellular Concrete as Flexible Pavement Subbase Material: Field Performance and Sustainability Study
(University of Waterloo, 2022-12-01)Enhancing the long-term performance of road infrastructure is an important goal for engineers in Canada, especially with changing climatic conditions. This has brought about varying approaches in design and construction ... -
Lightweight Cellular Concrete: Applicability of Pavement Subbase Layer Materials
(University of Waterloo, 2021-12-06)Canada is the second-largest country in the world and has over 1.04 million km of roads. Residents and industries rely on the road network as it contributes significantly to quality of life. Pavement structures built over ...