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Now showing items 11-20 of 54
THE EFFECTS OF CASTOR CANADENSIS (NORTH AMERICAN BEAVER) COLONIZATION ON A MINE DRAINAGE IMPACTED STREAM
(2017-12)
This study investigated four aspects of North American Beaver (Castor canadensis) colonization: (1) retention of metals in-stream due to the presence of dams, (2) metals contamination and leachability of sediments (3) ...
Investigation of the Effects of End Region Deterioration in Precast, Prestressed Concrete Bridge Girders
(2016)
An important factor in life expectancy of concrete bridges is the effect of corrosion of reinforcing steel on concrete and appurtenant embedded materials. New bridges, though continuously exposed to the elements, are ...
The Influence of Organic Metabolites Binding with Ferric Iron on Corrosion Mechanisms in Oil and Gas Production Water
(2018-05-11)
Corrosion of carbon steel is a potential hazard to oil and gas production infrastructure. The total annual cost of corrosion in the oil and gas production industry is estimated to be $1.372 billion in the USA (Simons, ...
Oklahoma Earthquakes and Their Effects on Highway Bridges
(2017-05-13)
Oklahoma is presently experiencing a higher rate of earthquake activity than historically
observed. Historical data on earthquake-induced damage to Oklahoma bridges is limited,
so the Oklahoma Department of Transportation ...
The Performance of Cement-Limiting and High-Volume Recycled Material Mix Designs for Use in Concrete Pavements Through Laboratory and Field Implementation Testing
(2016-05)
Conventional methods of replacing roadways are beginning to negatively impact the environment. The continued use of high volumes of cement will continue to exacerbate the increasing levels of carbon dioxide. In addition ...
EFFECT OF DIOIC ACIDS ON FERRIC IRON REDUCTION BY SHEWANELLA ONEIDENSIS MR-1 AND CARBON STEEL CORROSION
(2017-12)
Corrosion represents a tremendous burden on infrastructure and industries such as the oil and gas industry. According to National Association of Corrosion Engineers (NACE), total annual cost of steel corrosion in the oil ...
Evaluation of Rolling-Type Isolation Systems for Seismic Hazard Mitigation
(2018-08)
Nonstructural components within mission-critical facilities such as hospitals and telecommunication facilities are vital to a community's resilience when subjected to a seismic event. Building contents like medical and ...
Incorporating Grillage Model Derived Load Distribution Factors Into Ratings of Prestressed Concrete Bridges
(2018-05)
Characterization and evaluation of bridges is a laborious task. A large number of bridges in Oklahoma are potentially deficient for shear due to differences between the current codes and those used to design the bridges. ...
THE PERFORMANCE OF CONCRETE CONTAINING HIGH VOLUMES OF RECYCLED MATERIALS FOR USE IN PAVEMENT APPLICATIONS
(2017-12)
America’s roadway system is in need of a more sustainable, efficient, and innovative plan to improve the condition if its infrastructure. As a possible solution, this research focuses on using recycled concrete aggregate ...