Open Access. Powered by Scholars. Published by Universities.®
Social and Behavioral Sciences Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Social and Behavioral Sciences
Practical Models For Interpreting Traffic Speed Deflectometer Data, Setare Ghahri Saremi
Practical Models For Interpreting Traffic Speed Deflectometer Data, Setare Ghahri Saremi
Open Access Theses & Dissertations
For more than 30 years, FWDs have been the most viable device for structural pavement evaluation. During the last decade, several moving deflectometers have been introduced, among those, traffic speed deflectometer has been proven as the most utilized device. Since TSD can measure the deflection parameters of pavement at traffic speeds up to 50-60 mph (80-95 kph), it overcomes FWD shortcomings. However, the analysis of the data collected with TSD is in its infancy.
Since TSD measures the vertical component of pavement velocity (a.k.a. deflection velocity), relationships to convert deflection velocities to deflections for further analyses are needed. Computer software …
Optimization For The Allocation Of Funds For Pavement Maintenance In Pavement Management Systems, Armando Ramirez
Optimization For The Allocation Of Funds For Pavement Maintenance In Pavement Management Systems, Armando Ramirez
Open Access Theses & Dissertations
Pavement maintenance and rehabilitation are critical and costly elements for highway agencies. A challenge for transportation agencies is to preserve roadways in an appropriate condition and extend the pavement service life while maintaining the safety and satisfaction of its users, and maximize the benefits obtained by the repair investments. Pavement maintenance programming is increasing in complexity due to limited resources and increments in traffic and population. Management decisions are usually based on personal judgment by pavement managers and sometimes those decisions are not even supported by previous experience. Research shows that optimization methods can produce significant benefits when transportation agencies …
Evaluation Of Mechanical Parameters Of Contaminated Road Base And Railway Ballast, Prajwol Tamrakar
Evaluation Of Mechanical Parameters Of Contaminated Road Base And Railway Ballast, Prajwol Tamrakar
Open Access Theses & Dissertations
This Dissertation comprises two topics in the area of transportation geotechnics that focus on the evaluation of stiffness parameters of contaminated road base and railway ballast. The abstracts of these two studies are provided in the following two paragraphs.
The performance of a flexible pavement depends on the mechanical characteristics of its unbound granular base layer. The mechanical characteristics such as stiffness and deformation resistance depend on many factors such as the material gradation, fines content, moisture content, physical properties of coarse aggregate and more. The base materials are often contaminated by the excessive fines that is caused by improper …