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i

A method to assess the use of new and recycled materials in pavements.

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  • Abstract:
    This report includes the results of a research project aimed at developing a comprehensive analysis

    framework for evaluating new and recycled materials to be used in pavements in Michigan. Two basic

    components of the framework are: (i) Engineering performance evaluation and (ii) Sustainability

    evaluation. Engineering performance evaluation included several options for each kind of material used at

    different layers of pavements. For asphalt pavements, there are three options. First option is based on the

    field data to be supplied by the proposer of a new/recycled material. Second option is laboratory

    performance data such as the push pull fatigue, flow number and IDT strength. The third option involves

    prediction of performance using Level 1 inputs in Pavement ME Design software. For concrete pavements

    and unbound layers, there are two options. First option, similar to asphalt pavements, is the field data. The

    second option is analysis using the Pavement ME Design software. For other types of materials, field data

    is required. Once data for any option is presented to MDOT (by an entity), MDOT can input these data in

    the NewPave software developed as part of this project to calculate an Engineering Performance Score

    (PSE

    ). Second stage of the analysis framework presented in this report is the sustainability analysis. The

    sustainability analysis of a new material includes three basic components: (1) Environmental, (2) Economic

    and (3) Social analyses. At the end of analysis of each sustainability component, a performance score based

    on sustainability (PSS

    ) is computed. Then the sustainability and the engineering performance scores are

    combined to compute an overall Performance Score (PS). This final Performance Score (PS) will be used

    by MDOT to decide whether to try the proposed new/recycled material in MDOT-administered roadways

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  • Main Document Checksum:
    urn:sha256:1f42b6715c85147606f00600c8622e2394bc01164c300f822714b10b59c3b487
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    Filetype[PDF - 2.28 MB ]
File Language:
English
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