Journal Published Online: 27 May 2021
Volume 50, Issue 1

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

CODEN: JTEVAB

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 TDSRhighcritical and TBBRlowcritical 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, France Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, Timisoara, Romania
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, France
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, France
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, France
Marc, Paul
Department of Overland Communication Ways, Foundation and Cadastral Survey, University Politehnica Timisoara, Timisoara, Romania
Pages: 19
Price: $25.00
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Stock #: JTE20200710
ISSN: 0090-3973
DOI: 10.1520/JTE20200710