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Pilot-Testing an Ion Exchange Technology for Selective and Regenerative Arsenate Removal and an Engineered Approach for Stabilizing Arsenic-Laden Process Waste Residuals
(2009-02-23)
Pilot-scale tests of a regenerable and selective polymeric ligand exchanger (PLE) were conducted to remove As(V) at the well field of El Paso Water Utilities (EPWU) in El Paso, TX, USA. The PLE was prepared by immobilizing ...
A Benefit/Cost Analysis of Paved Shoulder Installation on High Priority Road Segments on Two-Lane Rural Highways in Alabama
(2008-09-09)
There are currently more than 40,000 deaths a year that occur as the result of motor vehicle traffic accidents, which have been ranked among the leading causes of death for Americans. In addition, a reported 55% of all ...
Methods for Scaling and Comparing Adsorption Datasets
(2008-09-09)
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 ...
Automated Screening Tool for the Stability of Highway Bridges Subject to Scour
(2008-09-09)
Most bridges in Alabama that are over shallow bodies of water, including small creeks, wetlands, and marshes, were designed so that the bridge superstructure is supported on pile bents. During major flood events, excessive ...
Determination of Hurricane Surge Wave Forces on Bridge Superstructures and Design/retrofit Options to Mitigate or Sustain These Forces
(2008-09-09)
An increasingly common occurrence when strong hurricanes come ashore along the Gulf of Mexico is that the hurricane surge/surface waves lift and push the superstructures of coastline bridges from their support bents into ...
Evaluation of Soil Effects on Soil Erosion on Off-Road Vehicle Trails using WEPP
(2008-09-09)
Erosion and sediment loss from the use of off-road vehicles (ORV) is an escalating problem on national forest lands. The increasing number of ORV riders coupled with decreasing riding areas has caused the United States ...
Shear Strengths of End Regions of Prestressed Self-Consolidating Concrete Beams
(2008-09-09)
Understanding of the shear and bond performance of self-consolidating concrete (SCC) is vital to fully implement SCC usage in structures. State highway structures are a potential application for prestressed SCC systems ...
Assesment of Equipment Performance Variables for Improved Management during Tillage Operations
(2008-09-09)
Deep tillage operations required to alleviate compaction layers in soils found especially in the southeast region of the United States remain to be one of the largest areas of energy and fuel expense for agricultural ...
Alternative Solid Fuels for the Production of Portland Cement
(2009-02-23)
Portland cement manufacturing involves the combustion of fuels with various raw materials at approximately 2,700 °F (1,500 °C) to produce clinker. Fuel costs and environmental concerns have encouraged the cement industry ...
Nondestructive Evaluation of Prestressed Concrete Structures by Means of Acoustic Emissions Monitoring
(2009-02-23)
The acoustic emission (AE) technique has been found to be an informative nondestructive testing (NDT) method for evaluation of structures constructed with certain materials. While AE evaluation procedures and evaluation ...