ABSTRACT
The number of life cycle assessment studies of in-place recycled pavements is limited and the few existing barely considered the Maintenance & Rehabilitation (M&R) and Use stage. The main reason behind this limitation is the lack of information on how the performance of the pavement evolves over time after the application of a treatment, and how to determine the M&R frequencies and service life of each alternative treatment. Pavement performance prediction models (PPPMs) are therefore needed to fill this gap. However, the progression of deterioration in recycled pavement systems in the long-term is not clearly understood and there is limited data to support the development of the PPPMs. This paper presents the development of PPPMs for road pavement sections rehabilitated with in-place recycling treatments in the state of Virginia, United States. The developed models show that the deterioration rate of roughness in pavement sections rehabilitated with these treatments ranges from 0.7 to 5.2 in/mi/year depending on the type of treatment.
