Fatigue and Thermal Cracking of Hot and Warm Bituminous Mixtures with Different RAP Contents

Nguyen Hoang Pham, Cédric Sauzéat, Hervé Di Benedetto, Juan A. González-León, Gilles Barreto and Aurélia Nicolaï
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Nguyen Hoang Pham: Laboratoire de Tribologie et Dynamique des Systèmes (UMR CNRS 5513), University of Lyon, ENTPE, Rue Maurice Audin, CEDEX 69518 Vaulx-en-Velin, France
Cédric Sauzéat: Laboratoire de Tribologie et Dynamique des Systèmes (UMR CNRS 5513), University of Lyon, ENTPE, Rue Maurice Audin, CEDEX 69518 Vaulx-en-Velin, France
Hervé Di Benedetto: Laboratoire de Tribologie et Dynamique des Systèmes (UMR CNRS 5513), University of Lyon, ENTPE, Rue Maurice Audin, CEDEX 69518 Vaulx-en-Velin, France
Juan A. González-León: Centre de Recherche Rhône-Alpes, Arkema Road Science, Rue Henri Moissan, CS42063, 69491 Pierre-Bénite, France
Gilles Barreto: Centre de Recherche Rhône-Alpes, Arkema Road Science, Rue Henri Moissan, CS42063, 69491 Pierre-Bénite, France
Aurélia Nicolaï: Pôle Développement—Direction Technique, Spie Batignolles Malet, 22 Avenue de Palarin, 31120 Portet-sur-Garonne, France

Sustainability, 2020, vol. 12, issue 23, 1-21

Abstract: This paper presents results of laboratory tests on hot and warm bituminous mixtures produced with Reclaimed Asphalt Pavement (RAP). Additives were used to produce warm bituminous mixtures. Fatigue behaviour and thermomechanical behaviour at low temperature were investigated. Fatigue was studied by analysing the tension/compression fatigue test results. Four different failure criteria were used in order to evaluate fatigue life. The low temperature behaviour of the materials was characterized using the Thermal Stress Restrained Specimen Test (TSRST). For each material, three replicates were performed. The experimental device was improved so that radial strains in two directions could be measured during the tests. Tri-dimensional behaviour could thus be investigated. The results of both tests were analysed and the influence of the void content, RAP content, type of additives and manufacturing process was evaluated. The results show that RAP addition and warm bituminous mixtures could be combined to obtain mixtures with performances comparable to classical hot mixtures.

Keywords: fatigue; TSRST; hot bituminous mixture; warm bituminous mixture; Reclaimed Asphalt Pavement; recycling (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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