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Evaluation of Critical and Essential Concrete Highway Bridges in a Moderate Seismic Hazard
(2014-01-21)
The task of this thesis is to determine if the response of critical and essential bridges designed using the AASHTO LRFD Bridge Design Specifications would meet performance requirements when subjected to the moderate seismic ...
Acoustic Emission Testing of Repaired Prestressed Concrete Bridge Girders
(2011-05-04)
Acoustic emission (AE) monitoring has proven to be a useful nondestructive testing tool in ordinary reinforced concrete beams. Over the past decade, however, the technique has been used to test other concrete structures ...
A Technology for Enhanced Control of Erosion, Sediment and Metal Leaching at Disturbed Land Using Polyacrylamide and Magnetite Nanoparticles
(2011-08-25)
Urbanization and human disturbance of land often result in serious soil erosion and releases of fine sediments and soil-bound toxic metals, which can lead to contamination of downstream water bodies and cause water treatment ...
Early-Age Behavior of Lightweight Aggregate Concrete
(2011-11-28)
Early-age cracking can be a severe problem in concrete as it can reduce the service life of the structure. In this project the early-age behavior of concrete was measured, evaluated, and modeled. The early-age stress ...
Optimization and economics of small-scale, on-farm biodiesel production using oilseed crops and waste vegetable oil
(2011-05-25)
Recent concerns over unpredictable fuel prices and desire to reduce farm input costs have warranted producer interest in growing alternative crops for the production of biofuels such as biodiesel. Ideally, biodiesel could ...
Humic Acids Resistant Gene Quantification Assay in Soils
(2011-05-17)
Humic acids are the most commonly reported group of inhibitors in environmental samples. Due to the ubiquity and abundance of humic acids in the environment, they are often co-extracted along with the nucleic acids and ...
Finite Element Simulation and Assessment of Single-Degree-of-Freedom Prediction Methodology for Insulated Concrete Sandwich Panels Subjected to Blast Loads
(2011-01-05)
This report discusses simulation methodologies used to analyze large deflection static and dynamic behavior of foam-insulated concrete sandwich wall panels. Both conventionally reinforced cast-on-site panels and ...
Assessment of Stability Test Methods for Self-Consolidating Concrete
(2011-04-01)
Self-consolidating concrete (SCC) is a highly fluid, nonsegregating concrete that can spread through reinforcement and completely fill formwork without the use of mechanical consolidation. Resistance to segregation, also ...
Influence of the LRFD Bridge Design Specifications on Seismic Design in Alabama
(2011-04-01)
The Alabama Department of Transportation (ALDOT) is in the process of transitioning from the AASHTO Standard Specification for Highway Bridges to the LRFD Bridge Design Specifications. One significant difference between ...
Evaluation of Non-Solvent Methods to Characterize Reclaimed Asphalt Pavement Binder
(2011-08-17)
Increases in material costs have led many agencies to consider allowing higher percentages of reclaimed asphalt pavement (RAP) in asphalt mixes. However, as RAP percentages increase, the stiffness of the overall mix is ...