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    Volume 50, Issue 1 (May 2021)

    Critical Temperatures Blending Chart for Binder Blends Produced with RAP Binder and Rejuvenator

    (Received 14 November 2020; accepted 24 March 2021)

    Published Online: 27 May 2021

    CODEN: JTEVAB

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    Abstract

    The objective of this article was to investigate the influence of a rejuvenator of vegetal origin on the behavior of several binder blends at low and high temperatures. An important characteristic of a binder is the critical temperatures that are related to the pavement performance (its susceptibility to temperature change). One fresh binder (50/70 penetration grade binder), a Reclaimed Asphalt Pavement (RAP) binder, and a rejuvenator were blended in different dosages, and a total of 17 binders were tested. Complex shear modulus tests at high and intermediate temperatures and bending beam rheometer tests at low temperatures were performed in order to obtain the critical temperatures. Another objective was to estimate T, D, S, R, h, i, g, h, c, r, i, t, i, c, a, l, , , , , , and T, B, B, R, l, o, w, c, r, i, t, i, c, a, l, , , , , , for all blends from the experimental results of base constituents by using two estimation approaches (a classical and a proposed approach, which is an original input of this work). A statistical analysis was performed in order to highlight their validity. Good correlation was found between the experimental and the estimated results. However, a more accurate estimation was performed with the proposed approach that has the great advantage of requiring only the temperature values and concentrations (a,b,c) for the three base components (respectively, fresh binder, RAP binder, and rejuvenator).

    Author Information:

    Forton, Andrei
    Université de Lyon/L'école de l'aménagement durable des territoires (ENTPE), Laboratoire de Tribologie et Dynamique des Systémes (LTDS) Unité Mixte de Recherche Centre National de la Recherche Scientifique 553 (UMR CNRS 5513) Vaulx-en-Velin, Cedex,

    Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, Timisoara,

    Mangiafico, Salvatore
    Université de Lyon/L'école de l'aménagement durable des territoires (ENTPE), Laboratoire de Tribologie et Dynamique des Systémes (LTDS) Unité Mixte de Recherche Centre National de la Recherche Scientifique 553 (UMR CNRS 5513) Vaulx-en-Velin, Cedex,

    Sauzéat, Cédric
    Université de Lyon/L'école de l'aménagement durable des territoires (ENTPE), Laboratoire de Tribologie et Dynamique des Systémes (LTDS) Unité Mixte de Recherche Centre National de la Recherche Scientifique 553 (UMR CNRS 5513) Vaulx-en-Velin, Cedex,

    Di Benedetto, Hervé
    Université de Lyon/L'école de l'aménagement durable des territoires (ENTPE), Laboratoire de Tribologie et Dynamique des Systémes (LTDS) Unité Mixte de Recherche Centre National de la Recherche Scientifique 553 (UMR CNRS 5513) Vaulx-en-Velin, Cedex,

    Marc, Paul
    Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, Timisoara,


    Stock #: JTE20200710

    ISSN:0090-3973

    DOI: 10.1520/JTE20200710

    Author
    Title Critical Temperatures Blending Chart for Binder Blends Produced with RAP Binder and Rejuvenator
    Symposium ,
    Committee D04