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Optimizing Operation Of A Campus Energy System For Economic And Environmental Considerations, John Imperatore Iii
Optimizing Operation Of A Campus Energy System For Economic And Environmental Considerations, John Imperatore Iii
Theses and Dissertations
The objective of this thesis is to determine effective costs of campus utilities, optimal operation of energy conversion and production subsystems through minimization of economic and environmental costs, and to evaluate how changing electrical grid costs and sources will affect future optimal operations at a campus. Characteristic days were developed to typify campus activities and their impact on energy consumption. At current grid electricity and natural gas prices, utilization of a cogeneration unit, a form of combined heat and power plant, is less expensive than purchasing equivalent amounts of electric and gas to produce steam, as long as there is …
Developing Pavement Preservation And Mitigation Strategies Using Pavement Me Design Guide For Rhode Island Dot, Sean Coffey
Developing Pavement Preservation And Mitigation Strategies Using Pavement Me Design Guide For Rhode Island Dot, Sean Coffey
Theses and Dissertations
The objective of the study is to develop pavement preservation strategies using Pavement ME. The International Roughness Index (IRI), Longitudinal Cracking, and Permanent Deformation (Rutting) in both the asphalt layer and the total structure were predicted using Pavement ME to determine the sensitivity of flexible pavement performance with varying pavement parameters, such as thickness of the surface and existing hot mix asphalt (HMA) layers, traffic volume, binder grade of the surface HMA layer and the base layer modulus. The surface HMA layer thickness and traffic volume were significant at 95% confidence level for both types of rutting and terminal IRI. …
Investigation Of Compaction Characteristics Of Subbase Material Using The Superpave Gyratory Compactor, Craig Kumpel
Investigation Of Compaction Characteristics Of Subbase Material Using The Superpave Gyratory Compactor, Craig Kumpel
Theses and Dissertations
The purpose of this study is to complete an in-depth analysis of data from both the Federal Aviation Administration's (FAA) full-scale testing and Superpave Gyratory Compactor testing to determine if the SGC is a valuable tool for the prediction of airport pavement performance and design. The practicality of the SGC was based on extensive laboratory and field testing of three unbound materials including P-154, P-209, and DGA, which are the subbase and base materials used by the FAA at the National Airport Pavement Test Facility (NAPTF). During the past construction cycles at the NAPTF, it has been found that the …
Correlation Between Multiple Stress Creep Recovery (Mscr) Results And Polymer Modification Of Binder, Eric Dubois
Correlation Between Multiple Stress Creep Recovery (Mscr) Results And Polymer Modification Of Binder, Eric Dubois
Theses and Dissertations
Nationwide traffic loads are increasing, pushing conventional asphalt to its limit, while in New Jersey matters are made worse by the heavy use of the Northeast Corridor. Polymer modification of asphalt, which can improve both low and high temperature performance, is already available; however, but in many cases traditional Superpave testing is not sensitive enough to quantify the impact of modification, dimensioning its use. Superpave Performance Grade Plus tests, are sensitive to polymer modification but are time intensive and costly, leading the New Jersey Department of Transportation to require styrene-butadiene or styrene-butadiene-styrene to be incorporated in all modified binder to …
Impact Of Structure, Material Properties, Temperature Curling, And Trafficking On Load Transfer Efficiency, Charles Cunliffe
Impact Of Structure, Material Properties, Temperature Curling, And Trafficking On Load Transfer Efficiency, Charles Cunliffe
Theses and Dissertations
This study examines the impact of structure, material properties, temperature gradient and trafficking on load transfer efficiency of rigid airfield pavements. The current FAA mechanistic design procedure for rigid pavements assumes constant stress-based load transfer efficiency (LTE (S)) of 25% at the joints. The design procedure assumes the material properties remain constant throughout the life of the pavement. Furthermore, the design procedure does not directly consider the effect that temperature induced slab curling can have on joint LTE (S). Analysis is conducted from full scale accelerated pavement test data from the National Airport Pavement Test Facility (NAPTF) operated by the …