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Full-Text Articles in Civil and Environmental Engineering
Investigation Of Asphalt Pavement Mixture Blending Utilizing Analytical Chemistry Techniques, Benjamin Frank Bowers
Investigation Of Asphalt Pavement Mixture Blending Utilizing Analytical Chemistry Techniques, Benjamin Frank Bowers
Doctoral Dissertations
The use of Reclaimed Asphalt Pavement (RAP) in new pavement mixtures is a topic of interest throughout the transportation industry and academia due its economic and environmental implications. There is concern however about how well the binder from the RAP blends with new, virgin binder when the mixture is created. Insufficient blending of the aged and unaged binders may compromise the long-term pavement performance. In this study, an enhanced staged extraction method is coupled with two chemical testing techniques to develop a novel approach for evaluating blending efficiency from a qualitative and quantitative perspective: Gel Permeation Chromatography (GPC) and Fourier …
A Comparative Health And Safety Analysis Of Electric-Assist And Regular Bicycles In An On-Campus Bicycle Sharing System., Brian Casey Langford
A Comparative Health And Safety Analysis Of Electric-Assist And Regular Bicycles In An On-Campus Bicycle Sharing System., Brian Casey Langford
Doctoral Dissertations
E-bikes have emerged in recent years as a valid mode of transportation. Comparable to regular bicycles in many ways, e-bikes offer some added advantages due to the additional electric motor on the bicycle. This dissertation combines three different research efforts centered on the study of e-bikes and their inclusion in e-bike sharing systems. First, it looks at a model for e-bike sharing at the University of Tennessee and examines system operations, performance, and demand from users. It investigates the characteristics of trips using the sharing system’s fleet of regular and electric bicycles, and it describes the preferences among system users …