Browsing by Department "Civil Engineering"
Now showing items 221-240 of 394
Impact of Vertical Ground Motion on Seismic Response of Steel Frame Structures
(2016-02-05)
It is a well-known fact that all earthquakes have three orthogonal components of acceleration including two horizontal and one vertical acceleration. Current design practice for design of structures in United States only ...
Implementation of Geosynthetic Reinforced Soil- Integrated Bridge System (GRS-IBS) Technology in Alabama
(2020-08-24)
Geosynthetic reinforced soil-integrated bridge systems (GRS-IBS) utilize mechanically stabilized earth (MSE) systems to support single-span bridges. A typical GRS-IBS is made up of three components: the reinforced soil ...
Improvements in the Design and Application of Erosion and Sediment Control Technologies for the Construction Industry
(2016-12-07)
Erosion and sediment controls (ESCs) have become essential components of construction related activities. Stormwater pollution prevention regulations are the principal catalysts driving the development of new ESC practices ...
Improving Camber Predictions for Precast, Prestressed Concrete Bridge Girders
(2016-05-03)
In precast, prestressed concrete construction, the eccentricity of the prestressing force typically results in a net upward girder deflection known as camber. Camber is first observed at the time of prestress transfer and ...
In situ Degradation of Trichloroethylene in Soil and Groundwater with Stabilized Zero Valent Iron Nanoparticles and Catalytic Hydrodechlorination with Supported Palladium Nanoparticles
(2012-05-03)
Chlorinated solvents, such as trichloroethylene (TCE), are potent carcinogens and have been found in soil and groundwater at thousands of National Priorities List sites in the U.S. To facilitate in-situ chlorinated solvents ...
Incorporating Consideration for Poor Households into U.S. Environmental Protection Agency Affordability Methodologies for Drinking Water Treatment
(2013-07-10)
In the 1996 Amendments to the Safe Drinking Water Act, Congress charged the U.S. Environmental Protection Agency (EPA) with developing affordability methodologies to determine if new drinking water treatment regulations ...
Incorporating El Niño Southern Oscillation (ENSO)-Induced Climate Variability for Long-Range Hydrologic Forecasting and Stream Water Quality Protection
(2012-08-02)
El Niño Southern Oscillation (ENSO) has been found to have a strong predictable effect on streamflow in different parts of the world. Since ENSO has potential relationship to seasonal and inter-annual variability in ...
The Influence of Colloidal Kaolinite on Th(IV) Transport in Saturated Porous Media
(2013-11-11)
Many laboratory and field studies have indicated that colloid mobilization was the most important potential source of enhancing the transport of a variety of contaminants in groundwater. However, limited research studied ...
Influence of the LRFD Bridge Design Specifications on Seismic Design in Alabama
(2011-04-01)
The Alabama Department of Transportation (ALDOT) is in the process of transitioning from the AASHTO Standard Specification for Highway Bridges to the LRFD Bridge Design Specifications. One significant difference between ...
Insitu Measurement of Pavement Distress and Causal Mechanisms in Expansive Soil along Alabama Highway 5
(2016-12-07)
Alabama Highway 5 is a farm-to-market road built directly on an expansive clay subgrade. Moisture fluctuations cause the soil to shrink and swell, resulting in severe pavement distress. Laboratory testing has been performed ...
Integration of GIS into Pavement Management Systems for Low Volume County Roads
(2007-05-15)
Geographic Information Systems (GIS) have often been used for highway pavement management (PM), but rarely for low volume county roadway systems. Methods for implementing GIS as a useful tool for county engineers in ...
An Investigation into the Application of Dynamic Merge Control in Work Zones: A Simulation Study
(2015-08-19)
With increasing highway traffic volume, construction and maintenance works are quite frequent. Upstream lane merging manoeuver and capacity bottleneck can result from a work zone lane closure, which pose increased safety ...
Investigation of Contributing Factors of Wrong-Way Driving Crashes on Partially/ Uncontrolled-Access Divided Highways
(2017-04-21)
Wrong-way driving (WWD) crashes are more likely to pose fatal and serious injuries than other types of highway accidents. This study focuses on differentiating the confounding factors that contribute to WWD crashes from ...
Investigation of Deep Foundations at the Spring Villa National Geotechnical Experimentation Site
(2018-04-27)
The Spring Villa test site is a National Geotechnical Experimentation Site located near Opelika, Alabama and managed by Auburn University. The test site is located at the southern end of the Piedmont geologic province and ...
Investigation of Deflection Basins to Identify Structural Distresses within Flexible Pavements
(2017-04-21)
Cracking in pavements is often considered a random phenomenon that is difficult to predict and diagnose. It would be beneficial to pavement managers to identify pavements that are likely to have cracking in the near future ...
Investigation of Pavement and Subgrade Distress at Alabama Highway 5
(2016-08-05)
The primary objectives of this study were to determine the root causes for subgrade failure and associated pavement distress along Alabama Highway 5 in Perry County, Alabama. In order to accomplish these goals photographic, ...
Investigation of Permeable Asphalt Treated Bases in Alabama
(2007-05-15)
The Alabama Department of Transportation currently uses a permeable asphalt treated base (PATB) course layer consisting of an AASHTO number 57 aggregate gradation with 2.0% to 2.5% asphalt content. The current mixture ...
Investigation of Seismic Design of Slab-on-Girder Bridge Details in Alabama
(2018-07-31)
The Alabama Department of Transportation (ALDOT) requested assistance to simplify and evaluate the process of designing typical slab-on-girder bridges for seismic loads. First, the determination of the seismic hazard in ...
Investigation of the Use of Steel Intermediate Diaphragms and Temporary Bracing Alternatives for Prestressed Concrete Girder Bridges
(2014-04-23)
Common in bridge construction today, diaphragms are placed transverse to the girders, connecting adjacent girders to provide stability and transmit loads. Diaphragms are defined as either end diaphragms – used at the ends ...
Investigation on the Kinematics of Entrapped Air Pockets in Stormwater Storage Tunnels
(2013-11-01)
Various mechanisms can lead to the entrapment of air pockets within stormwater storage tunnels when they undergo rapid filling during intense rain events (Vasconcelos, 2006). These entrapped air pockets are linked to ...