Incremental nonlinear model for predicting pavement serviceability

Jorge A. Prozzi, Samer Madanat

    Research output: Contribution to journalArticle

    Abstract

    A recursive nonlinear model was developed for the prediction of pavement performance as a function of traffic characteristics, pavement structural properties, and environmental conditions. The model highlights some of the advantages of relaxing the linear restriction that is usually placed on the specification form of pavement performance models. First, a functional form that better represents the physical deterioration process can be used. Second, the estimated parameters are unbiased, owing to a proper specification and the use of sound statistical techniques. Finally, the standard error of the prediction is reduced by half that of the equivalent existing linear model. This improved accuracy has important economic implications in the context of pavement management. The model developed as part of this research enables the determination of an unbiased exponent of the so-called power law and of the equivalent loads for different axle configurations. The estimated exponent confirms the value of 4.2 traditionally used. However, it should be noted that this exponent is only to be used for determining damage in terms of serviceability. On the other hand, equivalent loads estimated for different axle configurations tend to differ from traditionally used values.

    Original languageEnglish (US)
    Pages (from-to)635-641
    Number of pages7
    JournalJournal of Transportation Engineering
    Volume129
    Issue number6
    DOIs
    StatePublished - Nov 1 2003

    Fingerprint

    non-linear model
    Pavements
    Axles
    linear model
    performance
    environmental factors
    Values
    damages
    Specifications
    traffic
    Law
    Deterioration
    Structural properties
    management
    economics
    Acoustic waves
    Economics

    Keywords

    • Cost allocations
    • Models
    • Pavements
    • Serviceability

    ASJC Scopus subject areas

    • Civil and Structural Engineering

    Cite this

    Incremental nonlinear model for predicting pavement serviceability. / Prozzi, Jorge A.; Madanat, Samer.

    In: Journal of Transportation Engineering, Vol. 129, No. 6, 01.11.2003, p. 635-641.

    Research output: Contribution to journalArticle

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