Pavement sections are typically subjected to a series of several maintenance and rehabilitation treatments over the lifetime of the pavement to restore conditions and prevent deterioration. A knowledge gap exists between treatment strategy selection and the estimation of treatment effectiveness and condition forecasting. Several pavement treatments have been applied to the test sections of the LTPP experiments SPS-1 through SPS-7 and GPS-6, -7 and -9. In this study sponsored by the Federal Highway Administration (FHWA), the time series pavement condition and distress data of such LTPP test sections and test sections in the States of Washington, Louisiana, and Colorado, where several pavement treatments have been applied were analyzed and the effectiveness of each treatment and each series of treatments were quantified. Treatments effectiveness were studied in terms of several metrics such as immediate change in functional/structural period (CFP/CSP), functional/structural condition reoccurrence period (FCROP/SCROP), and remaining functional/structural period (RFP/RSP). Based on a synthesis of the results, recommendations were made for pavement managers to better perform LCCA and for future research.
Read
