Properties of reclaimed asphalt pavement mixture with organic rejuvenator

•Imidazolines cause softening effect of the aged binder.•Imidazolines can be used as natural rejuvenators in asphalt mixes with RAP.•The optimal addition of imidazoline is 2% by weight of asphalt. The paper assesses the influence of two types of modifiers obtained from natural resources on the prope...

Full description

Saved in:
Bibliographic Details
Published in:Construction & building materials 2021-02, Vol.271, p.121514, Article 121514
Main Authors: Wróbel, Michał, Woszuk, Agnieszka, Ratajczak, Maria, Franus, Wojciech
Format: Article
Language:English
Subjects:
Asphalt
Dynamic viscosity
Imidazoline
Penetration
Reclaimed asphalt pavement
Rutting
Softening point
Stiffness modulus
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Imidazolines cause softening effect of the aged binder.•Imidazolines can be used as natural rejuvenators in asphalt mixes with RAP.•The optimal addition of imidazoline is 2% by weight of asphalt. The paper assesses the influence of two types of modifiers obtained from natural resources on the properties of road asphalt and asphalt mix containing reclaimed asphalt pavement (RAP). In this research, rapeseed and oleic imidazolines were used as modifiers. Based on the penetration, softening point and dynamic viscosity tests, 2% addition of imidazoline was determined as optimal. It was found that imidazolines can be applied as a rejuvenator for asphalt mix with RAP due to their softening effect of the aged binder. Asphalt mix with imidazoline modifier and polymer-modified bitumen is characterized by improved resistance to low-temperature cracks and permanent deformations.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2020.121514