Evaluation of bio-materials' rejuvenating effect on binders for high-reclaimed asphalt content mixtures
JIMENEZ DEL BARCO-CARRION ; PEREZ MARTINEZ ; THEMELI ; LO PRESTI ; MARSAC ; POUGET ; HAMMOUM ; CHAILLEUX ; AIREY
Type de document
ARTICLE A COMITE DE LECTURE REPERTORIE DANS BDI (ACL)
Langue
anglais
Auteur
JIMENEZ DEL BARCO-CARRION ; PEREZ MARTINEZ ; THEMELI ; LO PRESTI ; MARSAC ; POUGET ; HAMMOUM ; CHAILLEUX ; AIREY
Résumé / Abstract
The interest in using bio-materials in pavement engineering has grown significantly over the last decades due to environmental concerns about the use of non-recoverable natural resources. In this paper, bio-materials are used together with Reclaimed Asphalt (RA) to restore some of the properties of the aged bitumen present in mixtures with high RA content. For this purpose, two bio-materials are studied and compared to conventional and polymer modified bitumens. Blends of these materials with RA bitumen were produced and studied to simulate a 50% RA mixture. The rejuvenating effect of the two bio-materials on RA has been assessed and compared with the effect of the conventional binders. Apparent Molecular Weight Distribution of the samples (obtained by the ´-method) and different rheological parameters were used for this purpose. Results revealed the power of bio-materials to rejuvenate RA bitumen, showing their capability to be used as fresh binders in high-RA content mixtures.
Source
Materiales de construccion, num. 327, 11p p.
Editeur
INST CIENCIAS CONSTRUCCION EDUARDO TORROJA
