The sealing and resealing of joints and cracks in PCC, HMA, and composite pavements is assumed to be an important component of pavement maintenance. Recently this practice has been challenged by research indicating that sealing may not be cost-effective. The Indiana Department of Transportation currently spends approximately four million dollars annually to perform joint/crack sealing. The primary objective of the research presented in this report is to investigate the cost-effectiveness of joint/crack sealing in relation to pavement performance. The results of a mail survey showed that most states, including Indiana, do not have quantitative justification for sealing policies, nor do they know the cost-effectiveness of the operations. Based on the experimental design for this research, nineteen test sites were selected in Indiana, each site having one sealed section and one unsealed section. Collected data including falling weight deflectometer measurements, pavement roughness, visual condition surveys, and core samples were used to evaluate the pavement performance between sealed and unsealed sections. A three-dimensional finite element pavement model was developed to evaluate the test location effect on the load transfer measurements. The temperature effect was evaluated by statistical analyses and a temperature correction factor for deflections on asphalt pavement is provided.


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    Titel :

    Initial Study for Cost-Effectiveness of Joint/Crack Sealing


    Beteiligte:
    C. Fang (Autor:in) / K. A. Galal (Autor:in) / D. R. Ward (Autor:in) / J. E. Haddock (Autor:in)

    Erscheinungsdatum :

    2003


    Format / Umfang :

    259 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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