2261 - Selection of Long Lasting Rehabilitation Treatment using Life Cycle Cost Analysis and Pavement Serviceability Rating

The desire for a more comprehensive assessment of pavement performance, reinforced by the emphasis on cost, is the purpose of the proposed research. Preserving the current pavement network has become one of the top priorities for many highway agencies including Oklahoma Department of Transportation (ODOT). There are many pavements on important routes that have exceeded their design lives and are in need of cost effective and sustainable rehabilitation. A well-planned preservation approach helps agencies like ODOT to determine the needs for enhancement of the system's functional ability with a multi-year maintenance and rehabilitation (M&R) treatment programs. It also helps the agency optimize the allocations of annual investment in pavement rehabilitation programs at network and project levels. Therefore the researchers and practitioners from two universities (Texas A&M University (TAMU) and Arizona State University (ASU)) team up to develop an innovative methodology that can be used by ODOT for determining the most cost-effective and long-lasting treatment alternatives. The objective of this research study is to develop an engineering decision tool that facilitates the selection of maintenance and rehabilitation activities and their timing for different types of high-volume asphalt pavement roads in the state of Oklahoma. This analysis tool will use historical data, materials characterization and performance testing, deterioration modeling and life-cycle cost analysis to establish and select the maintenance and rehabilitation program.