Browsing PhD Dissertations - DO NOT EDIT by Title
Now showing items 216-235 of 273
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PHOTOCATALYTIC AND PHOTOCHEMICAL DECOMPOSITION OF VARIOUS PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN WATER
(2021-08-12)Per- and polyfluoroalkyl substances (PFAS) are anthropogenic compounds comprised of a perfluoroalkyl backbone and a terminal functional group. Their detrimental health effects of in humans, like other halogenated chemicals, ... -
Physical and Mental Health Challenges of Construction Workforce Active in Extreme Weather Conditions
(2022-08-15)Construction sites continue to operate despite inclement weather, exposing workers to unpleasant working circumstances that can lead to various physical and mental health challenges. A thorough literature review yielded ... -
PLANNING, DESIGN, AND OPERATIONAL ANALYSIS OF UNDERGROUND FREIGHT TRANSPORTATION SYSTEMS WITH INDIVIDUAL AUTONOMOUS VEHICLES
(2018-08-09)Given the increases in freight transportation demand, the current infrastructure for freight transportation appears insufficient. Moreover, the future development of capacity for freight transportation infrastructure seems ... -
POST-DISASTER CONSTRUCTION LABOR COST FLUCTUATIONS: MEASUREMENT AND MODELING
(2018-12-06)The United States has been one of the top five countries most frequently hit by natural disasters. The post-disaster survival of cities and communities depend on their capabilities to reconstruct and repair damages to ... -
Pseudo-probabilistic User Equilibrium Assignment In Travel Corridor Networks Containing Managed Facilities
(Civil & Environmental Engineering, 2011-03-03)Throughout the years, transportation organizations and agencies have been unable to keep up with increasing demand for roadway facilities. Similarly, traditional public-sector funding such as motor fuel taxes is falling ... -
QUANTITATIVE NON-DESTRUCTIVE EVALUATION (NDE) OF FRP LAMINATE-CONCRETE BOND STRENGTH
(2017-12-06)Repair and rehabilitation methods for civil infrastructure have become a topic of great interest to engineers. Fiber Reinforced Polymer (FRP) is considered as one of the most popular and practical solutions for strengthening ... -
Quantitative Non-Destructive Evaluation of Rebar Corrosion in Concrete
(2022-05-17)Corrosion of rebar is considered the leading cause of deterioration in concrete structures. When steel rust, it occupies larger volume and creates pressure on the concrete, leading to cracking and spalling. As the cross-section ... -
Quantitative Non-destructive Evaluation Of Rebar Diameter And Corrosion Damage In Concrete Using Ground Penetrating Radar
The purpose of this study is to develop new methods for quantitative estimation of rebar diameter and loss of area of rebar due to corrosion using Ground Penetrating Radar (GPR). The existing methods of determining the ... -
Rainfall induced distress in low volume pavements
Annual expenses of distresses caused by volume change of expansive soils induce significant financial burden on maintenance authorities. The problems occur as the expansive soils within the unsaturated zone of the soil ... -
Rainfall Simulation for Investigating Hydrologic Responses to Storm Characteristics and Facilitating Frequency Analysis
(2019-08-06)Hydrologic and Hydraulic practices depend on the characterization of extreme precipitation that is rare in nature. Despite the advancement in sensing technology, the observation record of extreme rainfall with good ... -
RAINFALL-INDUCED SLOPE FAILURE – AN EARLY WARNING SYSTEM
(2021-12-16)Globally, slope failures cause substantial death tolls and economic loss. Embankments constructed on high plasticity clay are vulnerable to cyclic swelling and shrinkage when subjected to climate. Thus, over time, soil ... -
A Refined True Triaxial Apparatus For Testing Unsaturated Soils Under Suction-controlled Stress Paths
(Civil & Environmental Engineering, 2009-09-16)A novel, computer-driven, true triaxial (cubical) apparatus has been developed to test unsaturated soil specimens under suction-controlled multi-axial stress paths that are not achievable in a conventional cylindrical ... -
REMAINING USEFUL LIFE PREDICTION OF WATER PIPES USING ARTIFICIAL NEURAL NETWORK AND ADAPTIVE NEURO FUZZY INFERENCE SYSTEM MODELS
(2018-05-08)The U.S. water distribution system contains thousands of miles of pipes with differing materials, sizes, and ages. These pipes experience physical, environmental, structural and operational parameters that cause corrosion ... -
Response Of Unsaturated Silty Sand Over A Wider Range Of Suction States Using A Novel Double-walled Triaxial Testing System
(Civil & Environmental Engineering, 2014-09-17)In recent decades, the state-of-the-art of our understanding of unsaturated soil performance has been considerably enhanced by incorporating novel and advanced features to the conventional testing devices such as direct ... -
Response of Unsaturated Soils Under Monotonic and Dynamic Loading over Moderate Suction States
(2017-09-27)The understanding of the mechanical behavior of the unsaturated soils has been significantly enhanced due to the recent advancement of technology and modifications to the conventional testing devices. However, the ... -
Reuse of Recycled Plastic for Plastic Road Design
(2021-12-21)The ever-increasing volume of traffic and the volatility of daily and seasonal temperatures that are being experienced globally make it essential that the quality and durability of roads are improved. Modifiers can improve ... -
REUSING OF RECYCLED PLASTIC AS PAVEMENT BASE AND SUB-BASE MATERIALS
(2021-08-10)A large percentage of waste materials is recycled back into the same product from which they originated. In spite of considerable progress in recycling waste materials generated in urban environments, the materials are ... -
Roadway Shallow Water Flow Modeling By Velocity Distribution
(Civil & Environmental Engineering, 2007-09-17)Manning's equation is a widely used method for determining flow discharge in a channel with unconfined gravity flow. The roughness value, n-value, is a critical factor for Manning equation to obtain the accurate amount of ... -
ROLE OF BINDER COMPOSITIONS AND CARBONATE POLYMORPHS ON THE PERFORMANCE OF CARBONATION ACTIVATED CEMENTITIOUS COMPOSITES
(2021-11-18)The most energy-intensive manufacturing industry in the US is the Ordinary Portland Cement (OPC) industry. This industry is responsible for 5-8% of global CO2 emissions caused by humans. The calcination of limestone to ... -
Runway Incursion Mitigation, Capacity Enhancement, And Safety Improvements With Perimeter Taxiway Operations at Dallas Fort Worth International Airport
(Civil & Environmental Engineering, 2007-08-23)A perimeter taxiway (PT) or end-around taxiway (EAT) operation is a new concept being developed at several airports around the country to eliminate active departure runway incursions during peak periods. PTs will enhance ...