Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Understanding Asphalt Concrete Aging Using Nanoindentation, Hasan M. Faisal
Understanding Asphalt Concrete Aging Using Nanoindentation, Hasan M. Faisal
Civil Engineering ETDs
Asphalt concrete (AC) is created by mixing liquid asphalt binder with solid aggregates. When asphalt binder is mixed with aggregates, it creates a thin film (about 7-16 microns thick) around the aggregate surface. Fine aggregate (smaller than 0.075 mm size) get entrapped within the binder film or mixed with the binder, and create a phase called mastic. Both asphalt film and mastic play significant roles in aging of asphalt pavement. To this day, tests were performed mainly on the bulk liquid asphalt, but not on the film or mastic. In this study, for the first time, nanoindentation tests were done …
Achieving Public Health And Climate Change Goals: What Do We Need To Know About The Transportation System?, Mohammad Tayarani
Achieving Public Health And Climate Change Goals: What Do We Need To Know About The Transportation System?, Mohammad Tayarani
Civil Engineering ETDs
The overall aim of this dissertation is evaluating what new knowledge can be gained about the environmental and public health outcomes of regional transportation planning strategies by implementing a suite of more spatially and temporally detailed transportation and air quality models. This new knowledge can be used to better understand the potential health effects of emissions exposure while also guiding the development of new transportation and land-use plans, and related policies that have the potential to achieve large reductions in pollution exposure and green house gas emissions at local and regional level.