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Now showing items 321-330 of 394
Long-Distance Overnight Values of Travel Time Across Modes and Tour Characteristics
(2018-04-23)
The value of travel time (VoTT) quantifies the willingness of individuals to pay money in order to save a unit of travel time. It is a critical metric for the transportation industry that underlies many policy decisions ...
Evaluation of Methods to Assess the Strength of Soil Cement Base
(2017-07-28)
Soil cement is a mixture of soil, portland cement, and water that, once compacted and cured, forms a strong and durable pavement base. Construction practices and variance among core strength data have led to questions ...
An UHPLC-MS/MS Quantitative Method for Trace Analysis of Per- and Polyfluoroalkyl Substances (PFASs) in Environmental Media from Alabama Estuaries
(2018-04-27)
Per- and polyfluoroalkyl substances (PFASs) comprise a large group of anthropogenic industrial compounds that are highly persistent due to their chemical structure. Because of the wide use of PFASs in textile manufacturing, ...
Effect of Lightweight Aggregate on Early-Age Cracking of Mass Concrete
(2017-12-06)
Early-age cracking in mass concrete structures is a severe problem which could lead to long-term serviceability related problems in the structure. In this dissertation, the effect of using lightweight aggregates (LWAs) on ...
Effects of Intersection Features on Wrong-Way Driving
(2018-03-22)
Wrong-way driving (WWD) crashes are much more likely to result in serious injuries or fatalities compared to all other crashes. The analysis performed in this dissertation shows, specifically, that the risk of a fatality ...
A Protocol to Assess the Impact of Crude Oil and Fuel Price Fluctuations on Future Asphalt Prices in the State of Alabama: A Stochastic Risk Assessment Approach
(2018-07-18)
Since the introduction of asphalt in the year 1870, it has become one of the main components of horizontal construction. According to the National Asphalt Paving Association (NAPA), asphalt covers approximately 94 percent ...
Finite-Element Modeling of Early-Age Concrete Behavior
(2018-07-24)
Early-age cracking of concrete may influence the long-term durability of a structure. Cracking occurs when the tensile stress in concrete exceeds its tensile strength. Early-age stress development in concrete is influenced ...
Gravity Current and Air Pocket Entrapments Caused by Shear-Flow Instabilities in Rapid-Filling Pipes
(2018-11-14)
Understanding the behavior of air-water interactions in closed conduits is very important for urban water systems that are subject to rapid filling conditions, such as stormwater systems during intense rain events. Among ...
Improvements in the Design and Application of Erosion and Sediment Control Technologies for the Construction Industry
(2016-12-08)
Erosion and sediment controls (ESCs) have become essential components of construction related activities. Stormwater pollution prevention regulations are the principal catalysts driving the development of new ESC practices ...
Evaluation of Laboratory Cracking Tests Related to Top-Down Cracking in Asphalt Pavements
(2016-12-09)
Top-down cracking (TDC) is now recognized as a prominent mode of failure in asphalt pavements. There has been much research conducted to characterize the failure mechanisms of TDC but there are still large gaps of knowledge ...