Browsing by Department "Civil Engineering"
Now showing items 381-394 of 394
Update of Bridge Design Standards in Alabama for AASHTO LRFD Seismic Design Requirements
(2013-04-19)
The Alabama Department of Transportation (ALDOT) has been required to update their bridge design specifications from the Standard Specifications for Highway Bridges to the LRFD Bridge Design Specifications. This transition ...
Use of a Small-scale Erosion Control Model in the Design of Silt Fence Tiebacks
(2006-05-15)
For most storm events, accelerated erosion caused by storm water runoff from construction sites can be mitigated through vigilant management efforts. The control measures that are designed to provide a practical field ...
Use of Anova Asphalt Rejuvenator and Balanced Mix Design Principle to Improve the Performance of High-RAP Asphalt Mixtures
(2019-10-22)
The use of recycled materials like Reclaimed Asphalt Pavement (RAP) in asphalt mixtures is now a common practice with associated economic, social, and environmental benefits. However, asphalt mixture performance issues, ...
Use of Hydroxyapatite Derived from Catfish Bones for Remediating Uranium Contaminated Groundwater
(2009-05-20)
Hydroxyapatite derived from catfish bones was used for removing uranium from contaminated groundwater. Literature review indicated that apatites from various sources of fish bones can be used for metal remediation. The ...
Use of Optimized Aggregate Gradations and Dust-of-Fracture Mineral Filler for Concrete Applications
(2015-12-04)
Many proportioning methods exist to help the designer achieve a well-graded, or optimized aggregate gradation in the concrete industry, but not all are effective. The Shilstone Method and percent retained chart have been ...
Use of Self-Consolidating Concrete in Precast, Prestressed Girders
(2014-07-02)
Self-consolidating concrete (SCC) is a high-performance concrete in the fresh state—because of its highly fluid fresh behavior, it requires no mechanical consolidation during placement. Prior to statewide acceptance of ...
Using GPS and Accelerometers to Identify Preferred Locations for Physical Activity Participation and Commuter Mode Choice
(2013-11-08)
As cities seek to foster more livable and active communities, much attention is being placed on promoting physical activity through active transport and wellness activities. As such, it is important that city planners and ...
The Utilization of Alternative Fuels in the Production of Portland Cement
(2007-08-15)
The production of portland cement converts many different raw materials into clinker, in the presence of temperatures on the order of 1,500 degrees Celsius. Historically, nonrenewable fossil fuels have been used to maintain ...
Validation of Laboratory Cracking Tests for Field Top-down Cracking Performance
(2020-04-20)
Top-down cracking (TDC) has been widely reported as a primary mode of distress in asphalt pavements. Currently, there is no consensus on a practical laboratory cracking test that can reliably predict an asphalt mixture’s ...
Verification of the Superpave Gyratory Ndesign Compaction Levels
(2006-05-15)
The original Superpave Ndesign table contained 28 levels based on a limited laboratory experiment. This was later consolidated to 4 levels based on the sensitivity of mixture volumetric properties to Ndesign; however, ...
Water Balance Analysis Using WARMF in Support of an EFDC Hydrodynamic Model
(2013-07-11)
An Environmental Fluid Dynamics Code (EFDC) model was previously developed for Bankhead Reservoir, located in northwest Alabama. The EFDC model inaccurately predicted water surface elevations in the reservoir, due to sources ...
Water Stabilization Using Microparticles
(2007-08-15)
Liquefaction is a phenomenon in which saturated, loose, cohesionless soil loses
its strength due to earthquake shaking or some other loading. A major occurrence of liquefaction was observed by engineers in 1964 during ...
WIM-Based Live Load Model for Bridges
(2018-04-24)
The knowledge of the actual live load is essential for a rational management of highway structures. Overloaded vehicles can cause damage including concrete cracking, potholes, excessive vibration and deflection, and even ...
Wrong-Way Driving: Crash Data Analysis and Safety Countermeasures
(2016-07-25)
Wrong-way driving (WWD) on controlled-access highways has been a consistent issue since the introduction of Interstate systems in the 1950s. Despite all the efforts to overcome the issue, there is still much to learn. This ...