Browsing by Department "Civil Engineering"
Now showing items 241-260 of 394
Knowledge Management in Construction using Building Information Modeling (BIM)
(2014-08-01)
Knowledge is generated in all the phases of a construction project during its lifecycle. It is stored in multiple formats (pdf, dwg, ifc, etc.) and is present at multiple locations (pdfs, cds, RFIs, etc.) in a project ...
Laboratory and Field Testing of Precast, Three Sided Arch Culverts
(2012-05-10)
The use of precast, three-sided arch culverts has become fairly popular for new short-span bridges and bridge replacements due to their rapid construction time, aesthetic appeal, and minimal impact to the waterway, but ...
Laboratory Refinement of 4.75 mm Superpave Designed Asphalt Mixtures
(2006-12-15)
In 2004 a pooled fund study was initiated to refine mix design criteria for 4.75mm NMAS Superpave designed mixes and field validate design criteria. Nine states were participants in this study, Alabama, Connecticut, Florida, ...
Laboratory Scour Testing of Hard Cohesive Soils in Alabama
(2014-01-09)
Establishing scour parameters in order to estimate the loss of soil adjacent to bridge piers is a crucial element in the design of highway bridges crossing over rivers and streams. Although there are numerous design criteria ...
Laboratory Testing of Transverse Joints in Precast-Panel Bridge-Deck Replacement Systems
(2017-08-17)
Out of the 614,387 bridges in the United States, 56,007 are structurally deficient (FHWA 2016). In many instances this structural deficiency relates to the deck of the bridge. Deck degradation is very common in bridges ...
Livable Neighborhood Factors Affecting Mode Choices in a Medium Sized University Community
(2015-12-04)
Communities across the United States are striving to increase walking, biking, and riding transit among their residents and thus become more livable. In order for these communities to become more livable, city planners ...
Live-Load Response of In-Service Bridge Constructed with Precast, Prestressed Self- Consolidating Concrete Girders
(2013-11-08)
In order to assess the viability of a bridge constructed with precast, prestressed, self-consolidating concrete (SCC) bridge girders in the state of Alabama, the Alabama Department of Transportation (ALDOT) sponsored an ...
Load Testing, Analysis, and Design of a New Box Culvert Wing Tab
(2018-08-03)
Culverts are critical hydraulic and transportation structures. They are often subjected to complex load conditions such as backfill earth pressure and traffic live load. Culverts may experience total and differential soil ...
Local and National Scale Energy Calibration of Standard Penetration Test Hammers
(2012-03-27)
A Standard Penetration Test (SPT) energy testing program was developed for the
Alabama Department of Transportation. Six Central Mine Equipment (CME) automatic
hammers were calibrated using force and velocity measurements. ...
Local Calibration of the MEPDG Using Test Track Data
(2013-11-08)
The Mechanistic-empirical Pavement Design Guide (MEPDG), now known as AASHTOWare Pavement ME Design, is a state-of-art mechanistic-empirical design method. It has been adopted by the American Association of State Highway ...
Long-Distance Overnight Values of Travel Time Across Modes and Tour Characteristics
(2018-04-23)
The value of travel time (VoTT) quantifies the willingness of individuals to pay money in order to save a unit of travel time. It is a critical metric for the transportation industry that underlies many policy decisions ...
Long-Term Deformations and Prestress Losses in Precast, Prestressed Bridge Girders
(2015-05-18)
Self-consolidating concrete (SCC) is widely becoming used to construct precast, prestressed bridge girders. In order to determine the acceptance of SCC for bridge girders in the state of Alabama, The Alabama Department ...
Low-Slip Force Friction Connections for Early Phase Energy Dissipation in Steel Structures
(2015-11-10)
Previous research suggests adding early phase energy dissipation to structural steel systems can improve seismic performance. This can be achieved with a Low-slip Force Friction (LSFF) damper designed to activate prior to ...
Measuring and modeling stormwater runoff from an interstate in a rural/forested watershed
(2016-12-12)
In hydrological research, roadways are often defined simply as an increased impervious portion of a watershed or a flow blocking structure. The research presented in this dissertation examines the effects of highway crossings ...
Measuring and modeling the impact of roadway runoff on a headwater tributary of the Cahaba River
(2015-07-24)
Stormwater runoff from highways has been a relevant focus of study both in terms of its characterization during construction phases as well as during the operational years. Highways have been thought to have adverse impacts ...
Measuring the Effects of Bridge Deck Replacement Methods on Construction Performance Factors
(2011-05-11)
The objective of this research was to develop and evaluate a methodology for measuring the effect of various bridge deck replacement methods on the total cost, schedule, and road user costs of a bridge project. Steps are ...
Mechanistic Characterization of Resilient Moduli for Unbound Pavement Layer Materials
(2008-08-15)
In recent years, there has been an industry shift in pavement design methodology from purely empirically based methods (e.g. The AASHTO Guide for the Design of Pavement Structures) to design methods that combine both ...
Mercury Immobilization by Subsurface Reactive Barriers
(2009-08-17)
Mercury contamination is becoming a prevalent problem for environmental engineers. Chlor-alkali plants and coal fire power plants are the main contributors to the spread of this neurotoxin into the environment. Mercury ...
Methods for Scaling and Comparing Adsorption Datasets
(2008-08-15)
The presence of reactive groundwater contaminants are a great concern to many government agencies and private entities. The fate and transport of these contaminants is determined by their interactions with subsurface ...
Microbial community analysis of Deepwater Horizon oil-spill impacted sites along the Gulf Coast using functional and phylogenetic markers
(2013-05-01)
We investigated the impact of the Deepwater Horizon oil spill on microbial assemblages in sediment, soil and seawater samples collected from sites along the Gulf Shore. Based on a GC/MS analysis only one sample from Bay ...