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Development and Calibration of Safety Performance Functions for Intersections on Rural Divided Highways in Alabama
(2020-07-21)
Although median separated highways provide apparent benefits over undivided highways, sometimes median openings on rural divided highways (RDHs) provide some of the greatest opportunities for frequent and severe crashes ...
The Development of a Decision Algorithm to Aid in the Selection of Pipe Material for Cross-Drainage Application
(2016-05-05)
The Code of Federal Regulations effectively limited allowable culvert materials to reinforced concrete pipe and corrugated steel pipe on Federal-aided projects. Angered by the exclusion, the plastics industry lobbied ...
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 ...
Identification of Selenium Reducing Species Within and Suggested Optimization of a Passive Biological Reactor
(2016-12-09)
As concern for the environment moves to the forefront of the issues considered most pressing by society, mankind is becoming increasingly aware of the harmful things it discharges into the ecosystem in the name of industry ...
Model for Permit Loads for Barnes Slough Bridge
(2016-12-10)
ALDOT has an eleven-span flat slab concrete bridge over Barnes Slough and Jenkins Creek on the northbound side of US Highway 82/231 that was built in 1915 for which there are no construction drawings or other available ...
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 ...
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 ...
Chromate immobilization in groundwater and soil using Iron-Manganese binary metal oxide nanoparticles
(2015-12-16)
Fe-Mn (iron – manganese binary oxide) nanoparticle were synthesized and test for the Cr(VI) immobilization in soil and groundwater. Water soluble starch and carboxymethyl cellulose (CMC) were applied to stabilize the ...
Moving Forecasting Error: A Risk-Based Cost Forecasting Approach
(2020-05-04)
The large amounts of historical pricing data the state transportation agencies (STAs) have collected during the last couple of decades, combined with the information technologies available today, have facilitated greater ...
Creep and Shrinkage Behavior of Concrete in Segmental Bridge Applications
(2020-11-23)
The objective of this study is to accurately predict creep and shrinkage behavior of concrete in the I-59/I-20 segmental bridge located in downtown Birmingham, Alabama. In order to quantify creep and shrinkage, four different ...