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Calibration of a Handheld X-Ray Fluorescence Device to Detect Chemical Stabilizers in Soil Subgrades
(2018-12)
Chemically stabilized subgrades increase the overall quality of pavements compared to non-treated subgrades. Currently, there is no efficient way to detect chemical stabilizers (CS) in pavement subgrades. Generally, only ...
TESTING STRUCTURAL ELEMENTS FOR FREE VIBRATION TO UNDERSTAND THEIR LINEAR DYNAMIC BEHAVIORS
(2018)
Dynamic forces such as strong seismic, wind, and impact loads can cause severe deterioration of structural elements in residential, commercial and other structural systems. In the field of structural health monitoring ...
The Effect of the Antibacterial Handsoap Matrix on the Kinetics of Triclosan Dissolution from Sand
(2016-12-16)
Triclosan (5-Chloro-2-(2,4-dichlorophenoxy)phenol) is present in many common household products. Most notably, triclosan, is an active ingredient in disinfecting hand soaps, cosmetics, and dental products because of its ...
Assessing Impact of Climate Change on Oklahoma Bridge Deck and Superstructure Deterioration using National Bridge Inventory Data
(2017-05-13)
Bridge deterioration is a prominent problem in the United States. Bridge deck and superstructure elements are often exposed to harsh conditions and their performance is critical in the overall sufficiency of a bridge. Many ...
Development Length of 0.6 in. Prestressing Strands in Precast, Prestressed Calcium Sulfoaluminate Cement Concrete
(2016-12-16)
Calcium sulfoaluminate cement is a very rapid setting, hydraulic cement that releases
approximately half as much carbon dioxide during production as conventional portland
cement. Calcium sulfoaluminate cement produces ...
QUANTIFYING HYDRAULIC CONDUCTIVITY IN MINE DRAINAGE PASSIVE TREATMENT SYSTEM VERTICAL FLOW BIOREACTORS
(2016-12)
Heavy industrial mining has occurred in the United States for more than 100 years, and in many cases, has led to large-scale environmental degradation, especially from historical operations where mining occurred prior to ...
EVALUATION OF STORMWATER TREATMENT BY VARIOUS REACTIVE MEDIA FOR BIORETENTION CELL DESIGN CONSIDERATIONS
(2018-05)
Bioretention cells (BRC) can be effective at filtering particulate pollutants from stormwater runoff, but substantial removal of the dissolved pollutant fraction is challenging. Various reactive treatment media for BRCs ...
Validation of Portable Handheld X-Ray Fluorescence (PHXRF) on Stabilized Subgrade Projects for Construction Quality Control and Geotechnical Forensic Investigations
(2016-05-13)
Problematic subgrade soils are often strengthened through pozzolanic reactions and/or cementing using various types of chemical stabilizers, such as lime, cement kiln dust, and fly ash. The amount of stabilizer needed for ...
PERFORMANCE MONITORING AND ANALYSIS OF GEOSYNTHETIC REINFORCED SOIL INTEGRATED BRIDGE SYSTEMS (GRS-IBS) IN OKLAHOMA
(2017-05-12)
In 2013, the University of Oklahoma, together with the Oklahoma Department of Transportation (ODOT) and the Oklahoma Bureau of Indian Affairs (BIA), started a feasibility study of GRS-IBS, which had been promoted by the ...
Evaluation of Surface Preparation and Bond Angle Combinations for Joint Replacement using Ultra-High Performance Concrete
(2018-05-12)
Deterioration of bridges is often attributed to declining performance of the longitudinal connections between precast members or transverse deck joints. Ultra-high performance concrete (UHPC) is a cementitious composite ...