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Full-Text Articles in Engineering
Development Of A Model To Assess The Effect Of Ozone On Public Health Using Models-3/Cmaq, Pedro Alex Sanhueza H.
Development Of A Model To Assess The Effect Of Ozone On Public Health Using Models-3/Cmaq, Pedro Alex Sanhueza H.
Doctoral Dissertations
According to the Clean Air Act, the establishment of priorities in air pollution control should be based on benefits to public health and welfare. Given this mandate, EPA has incorporated the health effect evaluation in the regulatory impact analysis of its rulemaking, such as Tier2 sulfur gasoline reduction and HDE diesel emission reduction. The Tennessee Department of Environment and Conservation (TDEC) has identified ozone as the primary pollutant of concern. All these antecedents provided the basis for developing a decision-making tool that helps to evaluate the various regulatory options in controlling the emission of ozone precursors from a health-effects point …
A New Long -Term Design Model For Rehabilitation Pipe Liners, Shanyun Wang
A New Long -Term Design Model For Rehabilitation Pipe Liners, Shanyun Wang
Doctoral Dissertations
Thin-walled plastic pipe liners are routinely used to rehabilitate structurally sound host pipes that have lost their hydraulic integrity. Such liners are often installed below the water table and are consequently subjected to external hydrostatic pressure which may lead to creep-induced radial deflections and eventual collapse of the liner within the host pipe. Most of the current liner design model is based on the extension of short-term model to a long-term buckling liner design method. The objective of this thesis is to examine and provide a correction factor C* to allow short-term liner buckling models to be more accurately used …
Comparative Performance Of Rubberized Hot Mix Asphalt Under Alf Loading, Hanlin Qin
Comparative Performance Of Rubberized Hot Mix Asphalt Under Alf Loading, Hanlin Qin
Doctoral Dissertations
In response to the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, Louisiana constructed five projects to evaluate several methods of using discarded tire rubber in highway pavements. The field performance was quite variable. To achieve the agreement among state agencies on the engineering benefits of using crumb rubber modifier (CRM) in HMA pavement and to define the circumstances where the LaDOTD can use asphalt rubber materials in the most cost effective way, a full-scale research program has been conducted at the Louisiana Transportation Research Center (LTRC) to evaluate the performance of CRM-HMA asphalt pavement under Accelerated Loading Facilities (ALF). …