Browsing PhD Dissertations - DO NOT EDIT by Title
Now showing items 224-243 of 273
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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 ... -
Seismic performance of double-channel and double-HSS sections, special truss moment frame with buckling restrained braces, and long span Special Truss Moment Frame
(2018-01-10)Until recently, all special truss moment frame (STMF) experimental research was done on only double angle STMFs. In order to satisfy the code seismic drift limitation, especially for mid-rise and tall multistory buildings, ... -
SEISMIC RESPONSE AND DEFORMATION ANALYSES OF EARTHEN DAMS
(2019-12-05)Assessment of the response of earthen structures, such as dams and levees, during earthquake events, is crucially important to geotechnical engineers. It is imperative to perform seismic response analysis to assess the ... -
Selective Catalytic Reduction Of Nitric Oxide Over Cerium-doped Activated Carbons
(Civil & Environmental Engineering, 2014-03-10)Selective catalytic reduction (SCR) with ammonia for diesel engine NOx reduction using activated carbon (AC) was studied. Comparisons of unmodified and cerium-doped Granular Activated Carbon (GAC), Activated Carbon Fiber ... -
Shear Behavior Of Steel Fiber Reinforced Prestressed Concrete Beams Without Shear Reinforcement
(Civil & Environmental Engineering, 2012-04-11)The ACI 318-08 building code allows to use the steel fiber reinforcement as alternative shear reinforcement with satisfying certain criteria when a beam is required minimum shear reinforcement. However, this provision ... -
SHEAR BEHAVIOR OF SYNTHETIC FIBER REINFORCED CONCRETE BOX CULVERTS
(2019-07-19)This research pursues a comprehensive experimental study on the shear capacity of zero-slump, dry-cast Synthetic Fiber-Reinforced Concrete (SYN-FRC) with the aim of reducing or even eliminating stirrups in box culverts. ... -
SORPTION-MEDIATED CHEMICAL PROCESSES FOR THE VERSATILE TREATMENT OF PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) IN COMPLEX MEDIA
(2020-08-10)In recent years, per- and polyfluoroalkyl substances (PFAS) have gained notoriety due to environmental and health concerns. These molecules are chemically stable which contributes to their persistence in biological systems ... -
Spatial Variability Models And Prediction Analysis Of Soil Properties Using Geostatistics
(Civil & Environmental Engineering, 2014-12)Soils are composed of solid, water and air phases whose characteristics are highly variable. The interactions of these phases in the soil matrix can lead to different types of topographical formations and characteristics. ... -
Stabilization Of High Sulfate Soils
(Civil & Environmental Engineering, 2013-10-22)Stabilization of expansive soils using lime and cement has been a favorite technique for practitioners over the years. However, recent heaving and premature pavement failures in lime and cement treated subgrades containing ...