Laboratory aging of asphalt mixtures : simulation of reclaimed asphalt and application as test method for durability

Konrad Mollenhauer (1) , Virginie Mouillet (2) , Nathalie Pierard (3) , Marjan Tusar (4) , Thomas Gabet (5)

1 University of Kassel
2 CETE Méditerranée - Centre d'études techniques de l'équipement Méditerranée
3 Belgium Road Research Centre
4 ZAG - Slovenian National Building and Civil Engineering Institute = Zavod za gradbeništvo Slovenije (Ljubljana)
5 IFSTTAR/MAT - Département Matériaux

Surface asphalt courses reach their end of service life after a time span between 10 and 30 years, depending on their durability. Afterwards, the surface layer is usually milled and reused in asphalt mixtures as reclaimed asphalt. In order to enable the analysis of durability and recyclability of a new asphalt mixture, four laboratory aging procedures were designed and comparatively applied on twoasphalt mixes. Besides aging of loose asphalt mix in heating cabinets at varied temperatures and durations, the additional application of UV radiation and pressure were analyzed. To evaluate the aging effects standard as well as performance bitumen tests were conducted. The aging effects on chemical properties of recovered binders were evaluated as well as properties of the aged asphalt mix. The paper presents the differences obtained in aging properties between the applied aging procedure in order to give a indication for the applicability of these procedures in order to analyse the asphalt mix durability and recyclability.

Mots clés: DURABILITE; ASPHALTE; LIANT; VIEILLISSEMENT

Domaines: Matériaux

Konrad Mollenhauer, Virginie Mouillet, Nathalie Pierard, Marjan Tusar, Thomas Gabet. Laboratory aging of asphalt mixtures : simulation of reclaimed asphalt and application as test method for durability. 5th Eurasphalt & Eurobitume Congress, Jun 2012, Turkey. 8p. ⟨hal-00850875⟩