Characterization of recovered bitumen from coarse and fine reclaimed asphalt pavement particles

Saliani, Saeed S., Carter, Alan, Baaj, Hassan et Mikhailenko, Peter. 2019. « Characterization of recovered bitumen from coarse and fine reclaimed asphalt pavement particles ». Infrastructures, vol. 4, nº 2.
Compte des citations dans Scopus : 4.

Prévisualisation

PDF Carter A 2019 19852.pdf - Version publiée Licence d'utilisation : Creative Commons CC BY. Télécharger (4MB) | Prévisualisation

Résumé

In the current era of road construction, it is common to add a small amount of reclaimed asphalt pavement (RAP) in asphalt mixes without significantly changing properties such as stiffness and low-temperature cracking resistance. Not only can these mixes be better for the environment, but they can also improve certain properties like rutting resistance. However, there is no clear understanding of how RAP gradation and bitumen properties impact the mixture properties. In this study, a single RAP source was separated into coarse and fine particles and added into a hot mix asphalt (HMA). Fourier transform infrared (FTIR) spectrometry was used to evaluate the chemical properties of the bitumen, while environmental scanning electron microscopy (ESEM) image analysis was used to visualize the differences of the virgin and RAP bitumen at a microscopic level. The observed results indicated that the recovered bitumen from coarse RAP did not have the same characteristics as the fine RAP bitumen, and the interaction of RAP bitumen with virgin bitumen significantly depended on RAP particle size. The amount of active RAP bitumen in coarse RAP particles was higher than in fine RAP particles.

Type de document:	Article publié dans une revue, révisé par les pairs
Professeur:	Professeur Carter, Alan
Affiliation:	Génie de la construction
Date de dépôt:	27 nov. 2019 21:00
Dernière modification:	13 déc. 2019 16:11
URI:	https://espace2.etsmtl.ca/id/eprint/19852

Actions (Authentification requise)

Dernière vérification avant le dépôt