A method to assess the use of new and recycled materials in pavements.
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2015-04-01
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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