Browsing by Department "Civil Engineering"
Now showing items 361-380 of 394
Theoretical Moment-Rotation Curve for Steel Piles Embedded in Concrete
(2017-07-31)
The accurate modelling and analysis of connections formed by embedding steel piles in concrete is a difficult undertaking that has only recently begun to receive attention in the research community. These connections are ...
Thermal Segregation: Causes and Effects on In-Place Density and Fatigue Performance of Asphalt Mixtures
(2012-04-17)
Previous research has demonstrated that an excessive loss of mix temperature during hauling and paving operations can cause significant reductions in the mix consistency and therefore, in its ability to be compacted ...
Theromdynamics of Steroid Estrogen Sorption to Activated Sludge
(2008-12-15)
Sorption is an important mechanism for removal of 17a-ethinylestradiol (EE2) in biological wastewater treatment. In an effort to deepen our understanding of this process, this work investigated the underlying thermodynamic ...
Time-Dependent Deformations in Precast, Prestressed Bridge Girders
(2012-08-03)
Precast, prestressed girders are used across the state of Alabama for bridge construction. There has been a desire to allow self-consolidating concrete to be used to manufacture these bridge girders. The time-dependent ...
Time-Dependent Deformations of Concrete for Precast/Prestressed Bridge Components
(2012-08-16)
Self-consolidating concrete (SCC) is a material that has properties capable of improving the quality and durability of structures. However, much is still unknown about the hardened properties of this material, including ...
Torsional Resistance of Drilled Shaft Foundations
(2018-07-30)
Drilled shaft foundations are commonly selected by public transportation agencies to support mast-arm traffic sign and signal pole structures. Those inverted L-shaped structures are subjected to lateral and torsional loading ...
Toward Improved Understanding of Aquifer Response Time Scales
(2017-07-25)
Several methods are available in the published literature to analyze transient groundwater flow processes. These methods include both numerical and analytical approaches which describe how groundwater heads would transition ...
Toxicity and Transcriptome Sequencing (RNA-seq) Analyses of Adult Zebrafish in Response to Exposure to Stabilized FeS and Fe3O4 Nanoparticles
(2017-11-14)
Iron-based nanoparticles (NPs) have been widely studied for potential applications in many fields, particularly in environmental remediation and biomedical areas. For example, iron sulfide (FeS) nanoparticles, have been ...
Transfer Length in Bulb-Tee Girders Constructed with Self-Consolidating Concrete
(2011-05-11)
This thesis is focused on the transfer bond behavior of self-consolidating concrete (SCC) relative to conventionally vibrated concrete (CVC) in full-scale, plant-cast, prestressed concrete bulb-tee girders for implementation ...
Transfer Length in Prestessed Self-Consolidating Concrete
(2005-12-15)
Over the years much research into the transfer lengths of prestressed beams cast with conventional-slump concrete has been performed, but very little has been done in regard to beams cast with self-consolidating concrete ...
Transferring Alabama's Smoothness Specifications from PI-based to IRI-based
(2006-08-15)
Currently, Profilograph Index (PI) is deployed as the pavement smoothness evaluation index in the Alabama DOT’s smoothness specifications. The specifications set the incentive, full and disincentive payment levels to ...
Trip and Parking Generation for Student-Oriented Housing Developments
(2013-04-08)
While there are many different residential land uses in ITE’s Trip Generation Manual, there is no land use category related to housing for college and university students. These housing developments are located off-campus, ...
An UHPLC-MS/MS Quantitative Method for Trace Analysis of Per- and Polyfluoroalkyl Substances (PFASs) in Environmental Media from Alabama Estuaries
(2018-04-27)
Per- and polyfluoroalkyl substances (PFASs) comprise a large group of anthropogenic industrial compounds that are highly persistent due to their chemical structure. Because of the wide use of PFASs in textile manufacturing, ...
Understanding and Estimating Travel Times of Overland Flows on Planes
(2014-04-23)
Estimating travel time of overland flow is one of the important studies in hydrology. A quasi-two-dimensional overland flow model (OFM) with the options of dynamic, diffusion, and kinematic wave approximation integrated ...
Understanding Cyclist Perceptions of Road Adjacent Shared-Use Paths: A Comprehensive Study of Both Stated and Revealed User Preferences
(2020-04-30)
Road adjacent shared-use paths are a valuable transportation facility for rural and suburban communities looking to reap the benefits of increased active transportation. Shared-use paths have the ability to immediately ...
Understanding of Road-Bioretention Strip Design and Improvement from Hydraulic Perspective
(2019-06-17)
This study is to understand and quantify the hydraulic and hydrological performance of road bioretention facilities as well as the basic problems in urban drainage and road bioretention design. An open-source two-dimensional ...
Understanding the evolution of nearshore Deepwater Horizon oil spill residues and characterizing them using GC/MS/MS methods
(2016-01-07)
On April 20, 2010, Deepwater Horizon, a semi-submersible oil rig exploring for oil in the northern Gulf of Mexico (GOM), exploded. The resulting accident released about 4.8 million barrels of oil into the waters of GOM ...
Understanding the Flow and Mixing Dynamics of Saline Water Discharged into Coastal Freshwater Aquifers
(2006-12-15)
Typically the origin of saltwater intrusion into coastal aquifers has been attributed to the reduction of freshwater flux (or head) in the aquifer. This intrusion is the most common natural source of saltwater contamination ...
Understanding Unsteady Flow and Modeling Water Quality Dynamics in the Coastal Systems under Various Hydrological and Climate Scenarios
(2014-05-12)
Three dimensional hydrodynamic Environmental Fluid Dynamics Code (EFDC) model was used to simulate flow, temperature, dye, age of tracer, and salinity in the Alabama coastal systems. The study area Perdido Bay and Wolf Bay ...
Understanding Unsteady Flow Dynamics, Temperature, and Dye Distributions of Density Currents in a River-Reservoir System under Different Upstream Releases and Meteorological Scenarios
(2016-05-05)
Three dimensional hydrodynamic Environmental Fluid Dynamics Code (EFDC) model was applied to simulate flow, temperature and dye distributions in the river-reservoir system. The study is in a river-reservoir system (124.2 ...